I'm considering a career as an airline pilot but I can't help but wonder how bad the fatigue really is.

After flying as a passenger on a commercial flight I'm usually feeling exhausted and really worn out. Yesterday for e.g. we took off from Aruba at 5:40 pm, stopped in CLT at around 9 and flew on to DCA and landed at 12:00am. I couldn't wait to get to sleep after that.

Am I just not cut out for this? Or is flying as a pilot somehow less tiresome?