I never find rereading my own fic quite as enjoyable as reading really really good fic by someone else, because I know all the beats and the reasons why and everything. But it's still so much more enjoyable than most other kinds of fic because I can cater to my own id and my own desires.
WELL. I have been writing for for almost 20 years now, and sometimes when I re-read a story I have forgotten plot points! It's delightful. I get all curious to see what happens next. *g* More generally, then I enjoy my own fic, yes. I, too, very much write for myself. When I'm lucky others enjoy it too!