hmm is the N900 the right phone for you.... clearly it depends on different things.

if you want to have a lot of apps right out of the box... forget it. even some very "simple" apps you can get for other platforms are not available or at least very limited for the N900.

but (and there is a huge but!) if you want to have a phone you can do nearly everything with... then you are on the right track.

to be honest i don't know a single person in my circle of friends, who would like the N900. and i for myself? since i have it... everyday i think at least once "crap why doesn't it have this fu*king app?" and some minutes later "hey didn't know this phone could do that, coooool :-)"
i still carry my iPod Touch around... but i wouldn't either sell my N900 nor buy an iPhone.