The OP is emitting truly toxic levels of Smug.

Nobody will care how you got around after you're dead. Nobody will spit on your grave for it, nobody will curse your name over it. The worst you'll get is having been part of an unfortunate time in history, but you're going to get that even if you're the exception rather than the norm.

The suggestion that being car-free implies some kind of austere life is just silly. I'm car free not because I can't afford one, but because I'd rather have more disposable income, which is the very opposite of wanting to live some kind of austere life.

As far as dignity goes, just because you think their life lacks dignity doesn't mean they or anyone else thinks that. Many would probably think your life lacks dignity. It's entirely subjective.

Frankly, the arrogance is detrimental to the broad goal of getting people to take cycling seriously outside of fitness and recreation. It just confirms any impression people may have of car-free people and utility cyclists being weirdos.