What is the most attractive non-physical characteristic someone can have?

Passion for something. It′s such a turnoff when you are talking to somebody and they aren't interested in anything.

Current events? Meh. Books? Meh. Films/Shows? Meh.

I don't care if it's stamp collecting or chewing gum flavors or the history of wallpaper design, just be passionate or interested in something. At least we can converse for while on that topic.