A couple of things...
6'7" tall, 240lbs - not my fault. Bealz - I hope I have the chance to not pass you something from the shelf you can't reach!
It is sometimes not the just comfort thing - I have flown a couple of times where I could not physically sit down in a regular seat - pitch was such that my butt was off the seat as my legs couldn't go forward far enough! As there is no easy answer, then I guess we have to just smile sweetly and be as nice as possible to those wonderful, charming, soopah cabin crew!