Well... Pilots LOVE moaning, didn't you know?
In my place we get even 6 or 7 early calls in a row. It's probably a matter of DNA and habit. To me fatigue comes in periods: I sometimes end a 3-day rotation crawling to the car park, one day off and I'm back rocking again.
Geezajob:
Being an airline pilot DOES get you tired. Of course it depends on your roster, kind of activity etc. But spending 8/more hours in a cockpit (try to notice how small they are), with pressurization and temperature changes, 10% relative humidity really makes the difference versus any "ground" job.
So, I agree there is lots of useless moaning around, but there is also something true about it. I wouldn't change my job with any other, so when I feel knackered I always get to think about worse situations other people are in. But that's a state of mind; your body will stay tired anyway