Jesus is the only way....why??

Because John 14:6 says so.  Compare Romans 11:33-36.

Lately, I am seeing a lot of signs in people's yards.... Trump, Biden, any functioning adult..... and.... JESUS 2020

John 8:12  I am the light of the world. Whoever follows me will never walk in darkness, but will have the light of life. ... When I am in the world, I am the Light of the World.

Jesus lived a perfect live and then he give his life for all sinful mankind to buy us back form the debt our original parents.Jesus saved faithful humans when he gave his life as a ransom sacrifice. (Matthew 20:28) Thus, the Bible calls Jesus the “Savior of the world.” (1 John 4:​14) It also states: “There is no salvation in anyone else, for there is no other name under heaven that has been given among men by which we must get saved.”​—Acts 4:​12.

Jesus ‘tasted death for everyone’ who exercises faith in him. (Hebrews 2:9; John 3:​16) Thereafter, “God raised him up from the dead,” and Jesus returned to heaven as a spirit creature. (Acts 3:​15) There, Jesus is able “to save completely those who are approaching God through him, because he is always alive to plead for them.”​—Hebrews 7:​25.Although we must believe in Jesus to gain salvation, more is required. (Acts 16:30, 31) The Bible says: “Just as the body without spirit is dead, so also faith without works is dead.” (James 2:​26)

Jesus is the only way because nothing else pays for sins but the blood He shed on the cross (Rom. 3:23-28).

The truth is that death leads to heaven or hell, and the only way to heaven is through faith in Jesus Christ.

The Bible is very clear that no one can earn their way to heaven since good works do not pay for sins. See Gal. 2:16, Rom. 3:23-28, 4:4-5, Eph. 2:8-9, Tit. 3:5. The only way to heaven is by believing in Jesus for His free gift of eternal life. Jesus shed His blood on the cross as the full payment for our sins. He did all the work; all He requires of us is that we believe in Him. Once you believe in Jesus Christ to save you, you are secure forever!

Because we have all sinned against a perfectly holy and righteous God, we all deserve eternal separation from God in hell (Rom. 6:23). However, God loves us so much that He sent His only Son Jesus to die on the cross as our Substitute so we don't have to go to hell. Christ died for our sins, was buried, and rose from the grave three days later (1 Cor. 15:3-4). He gives eternal life freely to anyone who simply believes in Him for it. No one can be saved by doing good works. Salvation is by grace alone through faith alone in Christ alone (Eph. 2:8-9).

"Verily, verily, I say unto you, He that believeth on me hath everlasting life" (John 6:47).

A fictional character can't be the only way. 

No. 

Jesus has lead many to become stupid and or criminal.

If you commit sin you are condemned to die physically and spiritually in hell.

Christ Died in your place. He paid for your sins.

Now if you accept the gift of god, you have nothing to pay, you are not condemned anymore.

If you reject Jesus then you have to pay with your own life for your sins. That's why Jesus is the only way.

Romans 6:23

For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord.  

Isaiah 53:5

But he was wounded for our transgressions, he was bruised for our iniquities: the chastisement of our peace was upon him; and with his stripes we are healed. 

Acts 16:31

And they said, Believe on the Lord Jesus Christ, and thou shalt be saved, and thy house. 

1 John 5:12

He that hath the Son hath life; and he that hath not the Son of God hath not life. 

Romans 5:8

But God commendeth his love toward us, in that, while we were yet sinners, Christ died for us. 

Ephesians 2

1And you hath he quickened, who were dead in trespasses and sins; 2Wherein in time past ye walked according to the course of this world, according to the prince of the power of the air, the spirit that now worketh in the children of disobedience: 3Among whom also we all had our conversation in times past in the lusts of our flesh, fulfilling the desires of the flesh and of the mind; and were by nature the children of wrath, even as others. 4But God, who is rich in mercy, for his great love wherewith he loved us, 5Even when we were dead in sins, hath quickened us together with Christ, (by grace ye are saved;) 6And hath raised us up together, and made us sit together in heavenly places in Christ Jesus: 7That in the ages to come he might shew the exceeding riches of his grace in his kindness toward us through Christ Jesus. 8For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: 9Not of works, lest any man should boast. 10For we are his workmanship, created in Christ Jesus unto good works, which God hath before ordained that we should walk in them. 

Because only one way is required and because making a second person go through all that Jesus went through to become the way would be unnecessary and superfluous. 

Silly thing to say -- because jesus is make-believe.

He's God's only authorized Life Insurance Agent. 

Acts 4:12 KJV — Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved.