Hey, yeah I know what you mean by being alone as as someone who solely collects, it's true that most have had their curiosity get the best of them and start playing as well. I'm really glad I did actually, I still collect like mad but it's quite fun to play too. I like how playing the game requires an even more in-depth knowledge of the cards than you would get just collecting. There are a few others out there who purely collect, but they tend to be very intense, buying the rarest Japanese cards and accumulating collections that value in the many thousands.
Out of curiosity, what about the game doesn't interest you as much? Are you into other tcg games at all, like Magic?