This is a wonderful thread, thanks all!! Perspectives on weight and travel change significantly with personal circumstances. I have lost alot of weight (over 70 lbs) over the past year and so, of course, stand firmly on the side of punative penalities against the grossly overweight when travelling!! Seriously, maybe the thing to do is to tell the overweight passenger who dumps him/herself next to you about the real benefits of smaller size when flying – fitting easily even into the narrowest, LCA seats; being able to put your shoes back on while remaining seated; passing crew and fellow passengers in the narrowest aisle; and, yes, in hygiene terms, sweating alot less when running for flights etc or boarding in a hot climate. The downside? Being horribly santimonious!!