If it wasn't for Console, there wouldn't be Mario, Zelda, or any Jrpgs. No final fantasy etc etc. There are alot of amazing games that have come out for consols only. Demons Souls was the most amazing RPG I have played in a long time. Consol gaming has had a huge impact on gaming in general.
Most developers won't release a PC game that isn't gonna be on a consol at the same time. Sure there are a few online rpgs like Guildwars that will never come on consols.. but the majority of big name pc games end up on console.
The only reason I don't completely dedicate all my time to my PS3 is because there are no MMOs. But that will change sometime in the future.