What are the advantages of a married life?

not being alone.You earn more money,,,,,,Take advantage of more tax breaks

,,,,,,,Enjoy companionship

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You won’t die alone

,,,,,,,,When a child is raised within a stable marriage, the child has a higher sense of security than a child whose parents are not married.,,,,,,,,,,,Married couples have a better sense of companionship and security than couples that just live together. Marriage helps give the assurance that the union between spouses is permanent. This sense of security is not experienced by couples that just live together, because nothing as strong as marriage is there to keep them together.

True love

Living a married life will teach you what love is all about.

When two people are together and love each other, it does not matter to them whether they are married or not; all they know is that they are in love. However, the act of marriage symbolizes a relinquishing of “your rights” for the sake of the one you love. This selfless action is one of the most obvious forms of true love.

Genuine respect

Living a married life lets you know what real respect is all about.

Marriage reveals many things about a person that might not have been so obvious while dating. Some of these “discoveries” will challenge spouses to see each other as they really are and still respect each other.

Companionship and togetherness are probably at the top of most lists.

an easy way to divide assets in a divorce

There are no advantages to being married. You give up your freedom. Your privacy. Your self respect. Your money. Your opinions. You will never say or do anything right again. This is if you are a man. 

For a woman there are tons of advantages. You get free money. A free house. A free car. You think you are always right. You can quit your job, stay home, relax, and put your your man deep into debt and then tell him he’s not good enough because he doesn’t earn enough to take care of you. Then when he has to work two or three jobs to pay the debt you created you go out and cheat on him and say it is because he is never there for you. 

Love and commitment.

The advantages or disadvantages are whatever the couple makes of the marriage.

Some married people have an incredibly profound lifelong experience and for others, it's a train wreck.

There is no one answer to your question that will be true for everyone.