Break-ups are some of the worst experiences in life. They can often be like experiencing the loss of a loved one, except they are still very much alive, or they can be incredibly contentious and bitter and anger inducing such that you feel like you'll never again know peace in your life again. The minute they are over, you may swear on top of some dramatic mountain somewhere that by God, you will never ever ever date or marry again, but don't do it. Don't shut that door.
If running and hiding from life is the only take away lesson you've learned from a bad or failed relationship, you're missing out on that huge blinking red dot in life that should indicate to you that you're supposed to take life's unfortunate lessons and learn and grow from them. Rallying bitterly hard against every man and woman who ever lived because one disappointed you or made you feel the lowest you've ever felt is closing yourself off entirely to new experiences and new good people who have done none of that to you. It's like saying, I'll never ever travel again because you had one bad trip. Hey you, shit happens. Like every other shitty thing that happens to you, pick yourself up, dust yourself off and start moving forward again.
I hate to break it to you, but you aren't punishing the world or gaming the system in choosing never to date or marry again; you're punishing yourself and relegating yourself to living a life devoid of even the possibility of love. Ouch. You're stuck in a time warp of what s/he did to you, said to you, how they hurt you, when s/he has also probably long ago moved on with their lives, because time doesn't stop and wait around for everything to be perfect for you again. You're wasting your life and your time re-living and rehashing old relationships in your past every second. I know it's tempting to think you can live in a hole and bury your head in the sand and nothing will ever hurt you again, but that's a very juvenile way of thinking about the world. We're all going to get hurt in life. You can't prevent that. You know the good in life because you also know the bad. You learn what you want and who you are from knowing what you dislike and don't want and from dealing others.
It's also a part of the ego to think that a relationship failed 100% because of the other person. A relationship takes two, and by not acknowledging that and choosing to just shut it all down and just blame the other person and the world at large for everything means you won't ever have the chance to be a better person for someone new or grow and learn from past mistakes. You'll just convince yourself, to yourself, that you are incapable of making mistakes or having the ability to fix them.
After a break up, take a friggin' minute to get your life back in order and just chill out for a bit and deal with the last one before even attempting something new because the wounds can be very raw at the beginning and its easy to only ever see the bad in situations or in people. Change your mindset to one where you know in your heart that you deserve love again in your life and stop thinking that a new great person can't possibly exist or that they should just be handed to you on a platter because you exist or because you had a bad relationship the universe somehow owes you with the next one. You have to try and fail and try and fail again like everyone else. The world is no more fair or unfair to you, than it is everyone else in the dating world, but you can find happiness again, you can date again, and you can find people that will help you to know love again.