Mmm... I don't think I can remember even half of them, so I'll just name a few.
Love is a topic that works fine... Philosophy in chosen fields, cars to a certain extent, music (used to be), life, and there's no denying Pokemon.
I'm interested to talk about anything as long as I can actually talk. And if I can't, as long as the other person is willing to explain it to me in a friendly way, I'll like it.
The exceptions are politics, sports, and maybe a little bit of science - all from off the top of my head...