Why have the followers of Jesus, quit looking for the truth?

You answered your own question. The road is narrow. Today people have become lovers of self and pleasure. It has been written....

Jesus said, "Many are called; but few are chosen." Among billions of people, million have already found the truth. Jesus also said that He is the way, the truth, and the life.

one simple answer is that they are taught to believe all that God every spoke are needs to speak is bound up in the christian bible.

however the very bible they use says Gods words cannot be bound, and if he will speak or do anything, he will call upon a prophet that HE raises up amongst us. amos 3:7

7 Surely the Lord God will do nothing, abut he revealeth his secret unto his servants the prophets.

the bible even says he will give us "pastors" to teach us.

Jer. 3: 15

15 And I will give you pastors according to mine heart, which shall feed you with knowledge and understanding.

and then when Jesus promised that he would send the holy ghost to lead us into all truth, no one understands that if the Holy Ghost is leading us and teaching us, it is both a gift of prophecy and personal revelation that happens.

so, many peoples rely on their teachers, and their spiritual leaders to lead them while they themselves are led, supposedly, by the spirit. but what is provable beyond a doubt is that many will say they are led by the spirit and yet disagree with each other. the only conclusion therefore is one is in error, or one is being inspired by Satan.

jesus indeed warned us against following the blind, because the blind will fall in the ditch.

Phillip Marshall, a former airplane pilot and author whose works included the 2003 novel “Lakefront Airport,” - “False Flag 911: How Bush, Cheney and the Saudis Created the Post-911 World (08)” and “The Big Bamboozle: 9/11 and the War on Terror,” a 2012 publication in which Marshall theorized it wasn’t al-Qaida but rather U.S. and Saudi government officials who orchestrated 9/11, was found dead along with his two children in their Murphrys-area home in California. Reports indicate all 3 died of gunshot wounds.

No need for the truth getting in the way of a good story.

You're referring to Matthew 7:13-14:

Enter ye in at the strait gate: for wide is the gate, and broad is the way, that leadeth to destruction, and many there be which go in thereat:

Because strait is the gate, and narrow is the way, which leadeth unto life, and few there be that find it.

Only a relative few in this world will find life, that is, eternal life in Christ. These are the ones whom God elected to salvation (Ephesians 1). These are the ones for whom Christ died (Matthew 1:21). These are the ones who rest in Christ after salvation, after God makes them born again (Hebrews 4:9-10).

Hebrews 4:9-10:

There remaineth therefore a rest to the people of God.

For he that is entered into His rest, he also hath ceased from his own works, as God did from His.

When God truly saves a person, the individual understands that God had to do 100% of the work required to save them. Not 99.999%, but 100%. Therefore, they will reject any false salvation plan which states that salvation comes about through repentance, believing in Christ, accepting Christ, inviting Christ into one's heart, being baptized in water, and so on. Those are all works, and we are not saved by works, but by the grace of God (Ephesians 2:8-9).

A person who is truly saved will be born again (John 3:3; II Corinthians 5:17), but with that comes the resting in Christ, which is vital. Individuals who only think they're saved (but really aren't) will be convinced that their salvation came by keeping some part of the Law (believing, repenting, etc.). Those salvation plans are doomed (Galatians 5:4).

This is why Matthew 7 speaks about many going the broad way, the way that leads to destruction. Even amongst people who call themselves Christians, the vast majority of said folks are trusting in something that they've done. They're not trusting in Christ and God alone for salvation. Despite their "belief" in Christ, they're still heading toward the way of destruction.

Individuals who trust only in Christ, who realize that they had no chance whatsoever apart from the mercy of God, and that nothing they could possibly do, say, or think could get them saved, are those who have true salvation. These are the ones who were elected to salvation. These are the ones who are the Israel of God, who have eternal life (Galatians 6:15-16).

Jesus promised the one Church He founded, and no other, "The Holy Spirit will guide you into all truth". Therefore its members do not have to look for truth. They already have it.

They didn't stop looking, they found the truth and didn't like what they saw.

You mean become Jewish huh.

That's really what Jesus wanted for his people, to become better Jews.

Perhaps it's because Postmodernism made truth either relative or non-existent.

Some might have, but not all. Some fundies have very narrow closed minds, but other Christians have open minds.