Perhaps the tool-less are just optimists, but it puzzles me too. I've helped many riders (on road and dirt) way more than I've helped myself. Lately, I've been loaning my mini-pump to riders who've shot thru their CO2 cartridges (mainly because of poor tire installation techniques - pinched tubes, improperly seated). But concur some are not mechanically inclined. I'm not saying cyclist must be mechanically inclined, but a couple common road side repairs, mainly swapping out a tube is necessary. I can use a can-opener, but I can't cook a Thanksgiving dinner.