Oh I'm not saying you shouldn't do RCs - it's vitally important to do them! It keeps you used to always thinking "is this waking life, or am I dreaming now?" - and that's the mindset you need.

But speaking for myself, I've never done an RC that made me realize I'm dreaming. I have however suddenly realized I was dreaming and then done RCs just to confirm - it not only confirms but seems to strengthen your awareness in the dream. I've also seen many other people on the board say the same thing. Maybe it does work the other way for some people though.