I'm a bit cynical about people (and to be honest I see it on here more than in real life) saying "we are adults, let us make our own decisions, assess our own risk, act sensibly" etc etc.
After all, we wouldn't apply that to the rest of society, precisely because we cannot trust people, in general, to not be bloody selfish.
For example, we don't say - we are all adults, we don't need laws about shoplifting or burglary, everyone can assess their own risk, no-one will do anything stupid, we don't need to lock our doors or give the police powers of arrest.
We can't all just decide that we don't agree with this rule/law, it's stupid, we're going to use my common sense.