Apple wasn't sued for 'abandoning' the first iPhone so your entire premise is flawed.
I never said they were sued for abandoning the first iPhone, so your entire post is presumptuous, misinformed, and uneducated. READ what I post, I'm an educated bloke who takes time to write his thoughts, don't skim then post your retort.
I said that IF Apple had not supported the iPhone 3G with iOS4.0, no doubt some lawsuit happy American WOULD have sued Apple for not supporting their device. By that, I mean that Apple are damned if they do and damned if they don't because someone, somewhere is waiting to pounce.
Apple done iPhone 3G users a massive favour by even considering working on iOS4.0 for their device. Sure, it's been buggy, but the hardware is limited compared to the current generation of devices from all manufacturers. Sure, because of this "lawsuit", Apple are having to spend further time working on iOS4.0 when they should have dropped support for the 3G altogether as it is nothing but the original iPhone with a 3G and GPS chipset. Same processor, same RAM, just faster networking and GPS. You know this of course, I don't intend to belittle you.
However, to return to your original complaint. I never once said Apple were sued for not supporting the original iPhone, I simply stated that while this person sued Apple for allegedly forcing her, or attempting to force her, to upgrade her device there is every chance that had Apple not supported the iPhone 3G with 4.0, that the same person would have sued for not being supported at all.
In other words, they need to shut up and stop complaining. They have old hardware, not only in relation to the iPhone 4, but to other handsets across the market.
There is no devine right to any update or degree of performance, and of course you upgrade at your own risk. If they can't run newer apps, then tough. Technology moves on, and the iPhone 3GS will be next to be left behind and eventually so too will the iPhone 4.
Although, I do not appreciate having to repeat myself.