Look, what you are advocating here is ironically enough extreme fanboyism. Why should I play a game for the sake of its graphics? Even more so, why should I play a game because of the community? That is blind fanboyism at its worst.
It is exactly this kind of mentality that encourages companies to churn out low-quality titles so long as they have the necessary advertising, a multiplayer component and the fanboys to buy it en masse. As long as it has "Counterstrike," "Call of Duty" or "FIFA" in the title the fanboys will buy it. For every CS 1.6 and Starcraft 2 release there will always be hundreds of low-quality titles with 1-2 year life spans. Yet people still buy and play them "because the community is moving on." And moving on is easy because the new product is supposed to be new and improved, which isn't hard considering how crap the previous one was.

And to conclude, no I don't care about progamers from 1.6 playing games that I don't care about. It never was about the community or the progamers. The famous 3D and coL switch to Source demonstrated that perfectly. It has always been the product itself that has brought the people together. When this product finally dies, people will find a new game and a new community. Why should it be any other way? If Coca-Cola were to die, should I switch to Coke Light just because it has Coke in the name?

And if you find Source and CS:GO fun then good luck and have fun. I really do not find CS:S fun and I find CS:GO even less fun. I genuinely don't believe I should be playing these games for your sake.