Absolutely - which is what I meant by "treat the patient like a grown-arse adult (even if they're not) who's allowed to make their own decisions, but just needs to be given the right information to make that decision"
We all do stuff that we "shouldn't"; I'd bet that every single one of us on these boards played rugby when we shouldn't have done - whether playing through an injury, or continuing too long before retiring, or playing when we had to attend a wedding the next day (ahem - please note, the best man having a bruised half-face, one functional eye, and being barely able to walk may not go down too well with the bride) etc. My worry is about people deciding to do stuff without knowing the damage they might be doing; beyond that, if you enjoy something then it's worth a price; it's my job to tell you what the price is (may be); not to tell you whether it's worth it or not.
Equally, I think scrum caps should come with a health warning "this product will NOT protect you from concussion, but it may increase your risk of concussive injury" - as opposed to being outright banned - education, not enforcement (though I'd support a ban on scrum caps in U16 rugby).