Like Mr Nighthawk, I don't like it when sounds are emulated.
But I dont mind DI'ing a guitar and reamping it (either through software or an amp) if it calls for it.
But I'll get strings when I can record real ones.
It's mostly down to taste though. I make a decision to use only the instruments available to me for these reasons:
1. I want to be able to actually play it live
5. It forces me to be more creative and pragmatic in my arrangements and songwriting
2. I prefer the sound of an actual instrument
3. I get more enjoyment out of actually e.g. playing a piano, mic'ing it and recording it than using midi sounds
4. I think the kind of music I do calls for an "organic" approach. When I record, I think about wood. Take it as you will
But seriously...I think there is something special and ermm "creative juice inducing" about sitting with a nice guitar or piano, with some lovingly placed mics, some gear with lots of lights in a nice wooden rack, hooked up to either a computer, or even better, a GIANT reel-to-reel, that at it's heart is just more FUN and musical that sitting clicking around on a computer.
music is my mojo.