@bouncybunny you don't get it. First, you can't do all of that on an iPhone.
Well, I just did it, so it must be possible. I may have to close each app at a time, but when I go back to it, my half typed email is still there, my web page form is where I left it and so on. It does everything it needs to. It may not be as fast as switching between open apps, but so be it (and OS 4 will fix this, so job done). The only advantage to me of multi-tasking would be the ability to play music from internet radio stations and so on in the background.
Look, either way, I'm not really after a features debate. It's great that you like the Palm Pre and that it does what you want. I'm sure the Pre is a decent phone. But it clearly doesn't offer what an iPhone does to enough people.
Most of the things that you talk about are done by a tiny minority of the smartphone target market. And I'm sorry, but if you even know what multi-tasking means, then you (and me) are techies. ;) What we think is easy to use, is not for 95% of the population (you know, those people who have never even used the right button of a PC mouse).
We are a tiny minority who even know what this stuff means, let alone use it. I use it on a Mac when I leave a 3D package rendering in the background, whilst I use Photoshop and wait for some large software update files to download. Multi-tasking is great for that. But on a phone? Who gives a stuff? Practically no-one. Apple know this. They are hardly slouches when it comes to introducing new technology into the market. They will have done the research and usability studies and targeted the product appropriately.
Look, whatever you think about Apple, people generally love their products. Simplicity, ease of use and elegance. People love their iPhones. They buy expensive covers for them and screen protectors. They clean them and buy little knitted socks for them. No-one does with with a Nokia or a Palm Pre. It's a different market.