A large percentage of men ended up on here BECAUSE they got married. I know you are not going to listen, but do some research even if it is only to look at the /r/DeadBedrooms thread on Reddit. It doesn't last, as soon as the second child comes along you can kiss goodbye to sex. You will end up praying she goes out for the afternoon just so you can get a half hours peace to go on Pornhub.
A marriage certificate is just a massive Sword of Damocles hanging over your head. 50% of marriages end in divorce, I find it highly unlikely that the 50% of people who do stay married are actually happy.
Divorce is really, really expensive and totally messes up your life financially for ever. You are 31, lets assume you get married in say 5 years and have two children. The seven year itch is a thing, once the children are at school full time there is a good chance she will think "Is this it?" and once that seed is planted there is nothing you can do.
So come divorce time you will be say 43, she will get to stay in the house because of the children and you will get to continue to pay for it. Unless you are earning really good money, your options are limited to moving into your parents or renting a cheap flat. You will rent a two bedroom flat because then the children can stay over, but they won't really ever want to.
You will go to the bank to ask about getting a mortgage to get your own place and they will just laugh at you as you are still on the mortgage of the marital home. Then it will suddenly dawn on you that you will most likely never be able to own property again and will be renting until the day you die.
You will be coming up to your mid 40s, living in some crappy rented flat, giving all your money to your ex wife and spending your evenings on dating websites trying to talk to overweight women who don't want to know as they are inundated with attention.
Think about what your life is like now and how much shittier the 50% chance of happening option above if you get married is.
Careful what you wish for.
Many have a different story and do not regret marriage, even if it has ended, it has given me more than I gave to it, and I was a { young} punter before my first marriage.
Children were involved, but we sold the house and as I had set her up in business she could afford her own, with the half share of equity as a large deposit. She was 18 when we divorced, 37 years ago, and still good friends
I spunked mine on booze, drugs and women, while renting a house with friends, that was party central, had a ball, worked hard played hard.
The children loved coming to stay with me, even the ones she had with her new partner, their cousins too, so no idea where your idea of children come from
I am separated from my second wife of thirty years, and still living in the family home, alone, she is the one renting, of which I pay half, when the time comes there is enough equity to buy us both a comfortable flat.
A big reason behind the split was the menopause and loss of sex drive, adults can talk about these things, even men
We are all still working, fit, sort of, and healthy with no regrets.
All I can say is you must have had a rough deal somewhere along the line, or picked some seriously wrong women
Life throws curve balls, just the way it is, not sure I have come across such a strong regret of what has been thrown at someone.