I'm a 1,90m dude, not particularly slender, bigger than 95% of humans out there. I fly economy most of the time (every time I have to pay for it myself). Sure you don't get a suite, but what sardines are you talking about? It's really not that bad. Get some videos on your phone, noise canceling headphones, and it's just fine. It's really not worse than my own car, space wise.