I guess it just depends on why you want to make games. If you don't want to make any money, then yest consoles don't matter. However, if you would like to make some money developing games, consoles are definitely important. Trust me, I am no console gamer. I have owned a PS3 ever since launch, but I own no PS3 games. It is solely a Blu-Ray player for me. But there are reasons why 99.9% of all big game companies release more console games than anything else.
Do you honestly believe that PC is the main gaming platform in the world? Sure there are a lot of games for it, but most of the money is in console gaming...unfortunately. I think your statement about not supporting people who want to play games on consoles is hilarious. While I personally have no desire to play games on a console, a LOT of gamers do.