I share this opinion. It's a pity that lots of old games don't run any more on newer Macs. To a certain degree I replaced my old favorites with the Windows versions bought cheaply from GOG and other sources. Together with VMware Fusion, Crossover and Boxer many of the old games become playable on the Mac again.
While Bootcamp is not actually a requirement, there are still some old games which work better under a real Windows than in a virtualized environment. That's one of the reasons why I have bootcamp and several virtual Windows solutions on my Mac.
So, can I live without Windows? Sure, I could keep my old Macs and have machines for several generations of older games. But to be honest, Windows does a much better job at keeping compatibility with older games.