I've always felt that the basic form factor patents Apple has would not ultimately hold up, and it would be insane for them to try and enforce them. But it still does not excuse the fact that Samsung tries to confuse the public that their product is pretty much an iPad/iPhone. They do this through marketing, packaging, peripherals, software and UI design.
I don't like the patent system the way it exists, and I think most of Apple's 'key' mobile patents are ridiculous, but I equally can't stand a company like Samsung that comes in and says we're just going to commoditize a great product by cloning it and selling it for cheap. I think this is where Apple's emotion comes in and the 'sue everyone' mentality takes over.