Most Helpful Guy
In my case (divorce) it was both our faults. We both had different methods of doing things. Combine that with a fear of change and you have a great recipe for a breakup! Slap two imperfect people together and what will you get? A totally imperfect union. However... if two people accept their part in the problem, they CAN make the necessary changes. It requires perseverance on both sides and a massive amount of patience piled over with gobs of forgiveness.
If you're fighting the situation all by yourself, trying to change but the other person won't or even try, then yeah, it's breakup time. My ex separated from me. She and I went to counselling after a couple weeks and when they started telling her things she had to change too, that didn't sit well with her. She filed for divorce after 15 years of marriage. It was easier for her to leave than change. The fear of leaving was less than the fear of changing.
Most Helpful Girl
Because they are stupid, immature and lazy. Why bother fixing something when you can just take the new one? If you were rich and your TV got broken, I assume you would be too lazy to fix it, you would just go and get a new one. This is a standard for people who lack empathy and who don't get attached to others. They think that the problem is in the SO, not in them. And they think it's gonna be better with someone else or alone, until the same shit happens again. If they are somewhat bright, after 10+ attempts they might realize that the problem is them and their routine, and they might change. But they rarely do, they get addicted to the routine and they don't really bother analyzing themselves. Even if they do, it gets too much for them and then they just give up. New TV it is!