For me, the first furry image I ever saw, and subsequently jerked it to, was this one from a dnd gods and deities book when I was like 9 or 10. No idea why, but it was attractive to me (pron is so much simpler when you're 10 isn't it?) Things just expanded from there, I studied this newfound fetish for catgirls which led to nekos which led to, eventually, all out furry pron. I have never and will never endorse fursuiting for any purpose other than sports mascots, but I definitely like the pron.