of course it's an individual thing, edam
for me, I think it's about risk assessment in a worst case scenario: if something happened- what are my chances of saving them?
in water- very good, they won't have hurt themselves, I am a strong swimmer, I have done enough lifesaving to know I would have a good chance unless the current was exceptionally strong; grandparents also very ggood swimmers
when there is a risk of head-bashing- well, once it's done it's done; there is nothing you can do; doesn't matter how good or strong you are- even doctors often can't do a lot
of course I have let her go on climbing frames after that, I'm not a total loon
but I do fuss more about heights, because I know that the damage is irretrievable
in fact, now that they are older, I do sometimes need to look away