hihi, funny thread!
Brutha: here's a female perspective. I don't mind at all my bf leaving the toilet seat up. He needs it up, I need it down, so why should one of us have more rights than the other? If I ask him to leave it down, for fairness reasons I would have to leave it up... We would both always forget about it. So he leaves it up, I leave it down, no problem.
Jim: the relationship failed because one attracted it

From my experience with my bf, focusing exclusively on what I like about him and on the positive aspects of the relationship helped a lot. Everything improved dramatically from that moment.
Those "little things" can be real problems though... Unfortunately he hates it when I am singing. I guess it's something like the toilet seat. I don't sing loud and I don't sing false... when I'm happy I'm just huming around sometimes, but when he's home this habit of mine annoys him. I can't stop it, he can't bear it... lol