I always wore a crash helmet while riding a motorcycle.
In part that was because to not do so would have been to break the law, but in such an obvious way that escaping unpunished would be extremely unlikely.
But this is not about motorcycles and traffic laws, it is about the thing inside, the switch that flips, the dawning realisation that while, for thirty years, you have been the centre of your own Universe, that is true no longer.
Now you have to grow up and be a Dad.