Personally, I love to use it. For some reason, first-person in most fics throw me off. I think it's because the voice is a little too intimate for me to be comfortable with. I can read origfic in first person, but not really in fanfic. It's weird. Third person can also be too distant. I like that Second person rests somewhere inbetween (at least when I read it). It gives you parts of both, sort of.