I only have one 24 fret guitar, the Jackson SL3, but I really miss the extra two frets now when I play anything else.
Certain songs are easier to play with the 24 frets - even if they weren't originally done on a 24 fret guitar. I'm thinking the solo in Gary Moore's "Walking By Myself" as a good example. Without a 24 fret neck that solo requires a lot of bending, and, to be honest, it's hard enough to play that solo as it is without trying to bend so many notes! The 24 fret neck simply makes it slightly easier to attempt it.
I'd be happy if all my guitars were 24 fret thru necks but retained their classic looks. I mean, a 24 fret Les Paul or Jackson Rhoads? That'd be awesome.
Or am I just lazy?