Anyone that rides a bike should know how to fix a flat. I think my Dad showed me how to do it when I was 7. I am not one to carry a bunch of tools around but do not go anywhere without what I need to fix a flat. It is pretty easy to swap a tube and refill a tire and the parts and tools you need are about as expensive as that Uber ride you take and way less expensive than replacing the bike that you left locked up hoping it would still be there when you got back.