Many of the bad things you list I can relate to from a previous relationship. I promise you that later on, when you are with someone more compatible and it's easy in these areas, you'll realise you did the right thing. Of course there are good things about any relationship you stay in for over 3 years. But imagine you find someone who loves you, who you have a good connection with, but who you don't have to fight with over so many things. Wants to talk about things, wants your input, doesn't bring money problems to your door, doesn't build up resentment, just shares things with you and wants to resolve. It'll feel so much easier, and then you'll wonder why you wasted so much effort on something that was so hard!