They didn't invent the microchips either, nor did they solder the PC together. For shame...
lol
I don't mind using synth presets, since I've never tried making one before. The way I look at it is this...the composers of ancient times didn't really invent the instruments, and they set the standard, so I guess technically we don't have to invent the instruments either.
Certain samples I understand, like the Roosevelt one (since it was a famous speech), and the Daft Punk one (there's nothing wrong with using a sample you made yourself.) It's just I wouldn't feel like the work was really mine if it was made out of mostly loops...I have nothing against listening to music like that, some of it is really great (for example, I like the sound of B.I.G Hypnotize and there are sample's from 2 different songs in it.) But personally it would just feel like I cheated myself.
Oh and by samples, yes, I mean loops. Those are the only kind of samples I'd consider using, using samples in place of a vst just doesn't work for me, the oscillations get messed up because it's not really generated, just pitched shifted.