On the eating in public, I don't enjoy it either, though ofr opposite reasons. I'm sick of getting the looks and the comments along the lines of "why does he bother, he'll only throw it up" (truly a rather rude older lady said this to me once..) or getting that ' 'oh look, that kid obvously has an eating disorder.." crap as well.
And I also think that airline seats suck, as I have fairly broad shoulders, so even though i have a 32 size waist and can fit my lower part into the seat, it's still damn uncomfortable if you are sitting next to someone else. The seats do need to get bigger, as the average person is getting taller and bigger, not so much in fattiness but in general mass, if that makes sense.