Sure, I don't play as well in most cases (however in some cases, especially bands that focus on A, G and D major chords) I sound just like the real thing. If I just had a marshal stack, it would be complete. The illusion of talent would be perfected.
Same thing with my FX processor: Wanna sound like you're playing a sitar in a stadium? It's just a few buttons away. I'll never learn how to play a sitar. And I guarantee I'll never be jamming away in front of a row of marshals in the silverdome... but a few buttons and I sound like it.
All of the power. None of the embarassment when I miss 1 out of 5 chords. God I love rock.