The computer is god in the modern age. Are you suggesting that god`s software is insufficient? do you know anyone that can play faster, and more accurately than a computer?
Seriously though. Technically speaking, you can even play drums with a twig. The same idea applies to making music using your computer. Its not the software - its the composer. Oh sure we can both bore each other in a pointless debate whether or not MIDI composition can be considered as "art", because anyone with minimal musical sense and intelligence can do that. But I say the hell with all, and damn the technicalities!
I wont speak for anyone else, but when I listen to music I don't really care how its done, unless I wanna do it myself. Like in marketing - its all about the final product. And if that final product was done using a computer, if its good, than so be it