Your view is that the limit of one's benefit from an innovation should be the time between when one releases an innovative product and when your competitors release copy-cat products?
Apple's claims against the Android tablets have been shown here to involve something like the claim that Apple invented the tablet, something that's also been debunked here.
Seriously, one of the patents is over automatic linking. Okay, it covers something more general, actually, but that's the embodiment that's the most recognizable.
You are correct that my personal opinion is in favor of no patent protection. However my original point was that Apple's patent actions have had significant short-term impact that hurts consumers. You can certainly make an argument that there is a long-term positive impact, but I do not believe that Apple is in any way harming the patent system itself.