The thing is, when I fire it up, I never find a compelling reason to keep using it daily. It is sitting beside my quad-core 3.4GHz Core i7 iMac w/ 3 screens and I _want_ to use it but I think I just don't have the apps to keep my interest.
I think that most of us who still use their Amigas/compatibles in daily use just love how the whole (operating)system works. It's not that much about the apps, but other things.
Of course there are some lovely apps which you love too, but to be honest, other systems have much better offering with the apps you need in the modern world, if you mainly need those. Although nothing still beats Magellan2, AmIRC, CEd, ARexx, PPaint, etc in my use
But I'd say if someone who has been a power user on the Amiga earlier (== knows what's possible) is now sitting happily in front of some other system like OSX, Windows, Linux without feeling annoyed... he's a lost soul now. Unfortunately many next gen buyers seem to be like that... having a new machine sitting somewhere without power and waiting some miracle to give them a reason to start using it.
