Tablets are great for people who just consume information, simple communication, and media (movies music etc), not for creating anything.
You have to relize that the job of most technology people is to sell the masses on the "next new thing" wether they need it or not, that is how you make money. If the market is saturated with desktops start pushing laptops, when everyone has a laptop start pushing tablets, when everyone switches to that start pushing full featured machines (desktops) and repeat.