I'm of the belief that phones should be phones, cameras should be cameras, and gaming devices should be gaming devices.
To me, all phone games are throwaways. Good for when you're taking a shit. That's about it. I will never pay for one.
The DSLite is the only Nintendo device I've bought since the original Nintendo console and the first version of the Gameboy. I borrowed the Wii and hated it. The DS, however, is wonderful and stuff like "Scribblenauts" keeps it very relevant to the type of games i like to play "on-the-go".
PSP is a totally different animal and I would never take it to a place like the beach - with open ports and a highly scratchable screen - it has to be mollycoddled unlike the DS, but great to bring along to the office and on trips.
My phone? As long as it has good reception and I don't get ass raped for internet connectivity, I'm good. Apple needs to take the advice my mother gave me when I was learning one thing and wanted to go off track... "Don't dillute yourself."
I think the iPhone is way more than it should be, and because of being so, is priced outside of a range that is accessible to the average consumer. I will be impressed when they offer a $75 iPhone with $50/month unlimited everything. Until then, I'll stick to my overrated G1 and $25 Nokia... which is better than the iPhone and G1 combined considering it's cheap as fuck, has excellent features, and is so well made it feels like it can stop a bullet and has survived many hard tosses against the wall and kept ticking.