Umm I'm sorry to break this to you buddy but I pirated every dreamcast game I owned short of sonic adventure and Phantsy star online. That's probably why the dreamcast failed.
Yeah my friend got a Dreamcast and then I pirated all the games for him. It was one of the most awesome consoles ever with amazing games. But the few other people I knew with one at the time also pirated games. It was just so easy because it didn't even need a modchip or anything. Just download, burn a CD, and play.
I was in college at the time and there were a few of us with Dreamcasts. I bought my games (and still have them), but there were guys with literally every single game in the library burned to disc.