Why do men say it's not their responsibility for their girlfriend's or wife's well-being and then get mad at the woman for breaking up with them?

I just saw a post about a guy blocking his girlfriend of 2 years because she asked to move in or to help her find a new place. There are a lot of cases of guys being incompetent and making the woman work harder in the relationship. A lot of pregnancies and afterbirth divorces, too. I feel connected to this, too. It's like the men stay for the highs in the relationship and the little arguments, but when it comes to life altering stuff, they decide they don't really love us and leave. If you wanted a friends with benefits, just say that. It's a level of responsibility being a boyfriend or a husband. When you have the means to help, you help because you have a special love for that person and it's supposed to get stronger as you get to know them. You're supposed to have her back when everyone else doesn't. In order of who she's suppose to run to, it's God, you, her parents, her friends and somewhere in-between somebody should advise a professional (stranger, if both of y'all can't handle it). You've proven that you're not to be trusted. Why does she have to stay, what happy memories can outweigh abandonment and betrayal. It's no repairing it, even if she tells you, you're fine. The trust level will never be the same.
It's a blessing for a woman to find out what kind of man she's dealing with before she has his baby or make any life decisions. It's equally a blessing for women to see the signs and act before it's too late. Women can do this too, yes, but I see men complaining like they weren't the cause of the breakup. I'm not saying that they shouldn't respect your boundaries, but everything should be in context. Especially if something comes up unexpectedly for both parties. If you don't want to live with her after 2 years of dating maybe it's time to be honest with yourself and break up.
Why do men say it's not their responsibility for their girlfriend's or wife's well-being and then get mad at the woman for breaking up with them?
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