I'll give it a year. If the market doesn't implode that is. I doubt a tablet and guess what. I don't use it that often. I either use my PC at home, or the laptop when travelling, or the smartphone when I can't be bothered carrying my laptop around. It is niche hardware.
You don't use your Android tablet that often, and this spells doom for the iPad?
Admittedly I'm only guessing you bought Android, but you don't sound like an mass-market Apple user. You think the iPad is niche? I'll tell you what's niche: owning four different computing devices, when just one will do 90% of the things that 90% of people want to do.