I sympathize with your argument, but bunching up "gamers" all in one group is wrong.
There is a real, tangible distinction between PC games and console games, a distinction that goes beyond how easy it is to play on consoles or on PC, where you seat or the size of the screen or the control scheme. It's about the market, and game developers, successful game developers anyway, know this distinction very well.
You can't release a game like Europa Universalis on console and expect it to do as well as it does on PC. On the other hand, you can release a game like Singstar on PC and expect it do as well as it does on consoles.
It's fine if you're rich and can buy multiple platforms and enjoy the games you like on all of them. I don't deny there are some console games I would like to play, but I can't spend that kind of money, it's just ridiculous. The PC gaming market is the richest and most varied gaming market around, and that's not even considering that's where most of the games *I* wanna play are.
It's a matter of preference, and that ties into a very real matter of platform.
In my opinion anyway.