I do play games on PC. Not every game I want to play comes out on the PC though. A console's graphics chip is fixed and the life of a console may be 10 years plus, so of course PC games will have the edge in terms of graphics a lot of the time.
That's fair enough. It's only my opinion.
I think they didn't add HD because last generation they didn't do so well, so they needed to make a console that could be sold at a reasonable price and still make a profit, and because they were taking a risk with a new approach to controllers which may well have failed.