I normally wouldn't quote an entire post, just the relevant portions. Sadly this is ALL relevant, and all to common.
I think relationships fail because of selfishness, neither wants to give, and that probably because of the role changes between the sexes. I won't go into women's liberation, which is a big part of it, because I don't want to give the impression I think it was a failure. I certainly think it was a failure for society, but not for men, not individually. It was a boon for men, they were freed form the age old bondage of having to care for a woman all her life. My father, thankfully, stayed with my mother till his end, but what a sacrifice! He was a young man just home from WWII when they met, she a pretty 17yo, he a handsome guy with a good job and a motorcycle. She fell pregnant and because of the mores back then Marriage was mandatory.
And that was it! His life was over, because he wasn't a stay-put homebody, love the kids type at all but just wanted to ride. Well he sold the bike and bought a car and spent the better part of his life in a house with 4 kids that had stolen the love of his wife. Oh she still loved him, but with only a part of her being, which is what always happens of course. He became a wage slave for 4 hungry rebellious mouths he resented, he had no life of his own bar the TV set and some rusting tools in the garage. By a stoke of pure luck my marriage ended after 3 years and I was free, free before I was 30. Since then I have had a string of relationships, sexual predominantly, and the last ended a year ago. So now I'm 62 with my own home and lots of motorcycles and I can stay up till 3am and do what I like, no one asking me where I'm going and how long I'll be, no "You're late? No, moody standoffs for days, no angry confrontations.
I'll never get another woman, it would be easy, even a younger one and the last was only 50 but they all have one thing in mind. Security, a home to call "THEIR" own. A friend had an attractive 30yo Ecuadorian girl he'd married, she was ideal, until her name was on the house, then it was all over poor bastard. Girls fall in love with young bad boys and men with assets lol. Ah well, such is life. As for your personal problems Carl, what can you do but suck it up or bail. I was filling up the car a year ago and got chatting at the pump with an older guy in a marriage similar to yours, he hated her basically and she him but they stayed together because of the house, neither wanted to lose it. I said cut your losses and go mate, but he couldn't. I'd have done it in a heartbeat! Another good mate, 40 years married got sick of his wife bitching every time he went to the bowls club for some rums. He didn't play, it was just the local watering hole. She knew there were attractive younger women there and hated him for having fun.
So he lost it one day, grew some balls and said we'll sell the house and go our separate ways. Well she freaked out at that and soon he was getting lots of sex, so much sex he lost interest in the bowls club HaHaHA. And then, believe it or not, she talked him into putting the home in the kids names because they were then living at his mothers looking after her. The poor bastard fell for it and as soon as the papers were signed the sex stopped. Now no sex, no house, just his mum and a fat wife. We used to ride together in our teens and early twenties. That all stopped when he got married. He drives a Camry now, and owns nothing but some old cloths an iphone and some cheap tools. When we shared together in our twenties he had a new bike and a half-cabin runabout with a 60hp on the back. Early 80's. He sold the boat to pay for the marriage and the honeymoon in Britain. She fell preggo there and started putting on weight. He loved his kids for sure, but they became his life, he lost whatever life he'd had before. Now all he talks about is what the kids are up to, you know. Their jobs, their homes etc. I have a kid too but he lives his own life, we catch up from time to time but I have my own so I don't need to live his with him.