The games I love to play on the PC:
Half Life series (1, 2, Blue shift etc)
Grand Prix 4
Toca series (Race driver, etc)
Need for Speed:Most wanted
So if these games were available on the Amiga, I would use it more, especially for games playing.
Don't take this the wrong way - I LOVE the Amiga, but when I see that the graphics card drivers support things like the Voodoo series and Radeon 9200, I think 'WHAT ABOUT THE CARDS THAT HAVE BEEN RELEASED IN THE LAST TWO YEARS?'
I don't want to start an argument. The reason for the above comment is that the games I love to play need fast hardware and the gorgeous graphics (which help to distinguish a good game from a great game) are due to the latest graphics cards.