You literally suggested that it would be, at the very least, impractical to get around if you're not a "healthy 20 year old", and yet cities all over the world are filled with people who are not, in fact, healthy 20 year olds, and they manage just fine.

And yet after an extremely blatant strawman, you have the audacity to call someone out who was responding to that strawman with a similarly extreme, but obviously tongue-in-cheek statement.