I personally hate the taste of Red Bull but I drink other energy drinks and my friends drink Red Bull and we have never got addicted to it. Monster Energy drinks do give me a upset stomach though, so I stopped drinking them all together plus they are so expensive. I find they don't really wake me up either.

That's why they drink one right after the other (most times).
Doing that is bad. I know with Red Bulls at least your not supposed to have more then 1 maybe 2 a DAY.