I don't think there's anything wrong with it. It can be hard to find a partner in this world I imagine, especially one that shares interests with you. The amount of friends* I have whose other halves don't like videogames, and this meaning that they don't get to play them in their houses much any more, is quite considerable. I lucked out in meeting someone that was into pretty much everything I am when I was 18, so I didn't need to resort to this, but I wouldn't turn my nose up at it if it led to love. However you meet your soulmate is ok with me, as long as it isn't like at a paedophile conference or something.
*I say "friends", I'm pretty much a lazy dude nowadays and see my "friends" very rarely, but if you've hung out with me in the last few years then you're still in my friends reference database!!!