603DX - not snobbishness, but pride and respect for oneself (& others) as I mentioned.
I was in travelling in business class to the USA a while back and there was a woman of maybe 40-45 years. Clearly not short of a penny or two and probably spent a fair bit of on herself I guess. However, she had an ill-fitting tee-shirt on and jogging trousers with stripes down the side on and no shoes. Christ, she was ready for bed for god's sake. She had the money to look so different but chose not to. This is what I mean by pride and respect and we are collectively a society that is what we choose to make it.
Some say if you don't like travelling with the everyone in economy at low cost, pay the price and upgrade but money doesn't change this attitide, as the example above shows.