In the past I played pirated games at the university and I had some, currently I have only one, and only because it wasn't sold anymore when I decided to try it.
I buy mostly budget editions, so I don't spend very much to do the right thing, moreover this way I help games I love to enjoy a longer lasting success. And this way I more easily avoid rip-offs, up until now I've been strongly disappointed very few times, twice because the games had gameplay and controls so crappy to ruin a good idea, and a few other times because there were critical bugs or HW incompatibilities and the developer had stopped patching them despite keeping on selling them, although in budget editions.