I had that attitude for a while too. Eventually you realise that having to reboot your system for a handful of games isn't worth it. Nowadays I just don't buy games that don't run on Linux.
Eventually we will reach a critical mass where game developers will actively develop for Linux, rather than being reliant on compatibility layers.
Yeah, about half of my library already runs on Linux.
The problem I have now is that, soon, I'm gonna want to do a reinstall so Linux can have more disk space. :) My PC's pretty fast, so the reboot doesn't really bug me all that much.