I fell in love with the show. Both my boyfriends were bronies, and as soon as I discovered clop, I kinda fell in love with it. I always used to draw horses as a kid (even played with the old school mlp horses) and just eventually migrated to anime, then pushed toward westernized comic style (still pushing there)
Anywho, I already liked drawing smut. So I just picked up ponies along the way.