I don't like having to poke my portable system with a stick.
Seriously, though, what's wrong with PS2 ports? They look pretty damn sweet on the PSP, and BTW, a lot of the games are made for the PSP and then ported to the PS2 (GTA:LCC and GTA:VCC to name a couple).
Do the Wii ports even remotely resemble their DS counterparts? No way.
3D is awful-looking on the DS, and awesome on the PSP.
Wiping the dust off my old PS1 library has been a suprisingly great experience.
The PSP's much larger screen is easier on my old eyes.
Modding a new PSP slim literaly took 5 mins.
I'm sick to death of Mario, Zelda, Donkey Kong and Co.
The only problem I have with the PSP is the size of the games, 71 games use 58GB of HDD space, in contrast, all DS releases 0001-2568 only take up 63GB.
I know I sound like a fanboy, but I just got the thing, and I'm giving it a lot of love right now...maybe once the newness wears off I might change my mind.