Same argument goes for cigarette and alcohol. Withholding access to them is a decision a parent can make. Are you for allowing children to purchase them?

I think we should ban cigarettes and alcohol for children, but we should also allow adults to make the decision to consume them rather than preventing them from doing so. We also should not ban unrelated products that happen to be bought from the same store.

BTW, it's worth noting that, in the UK, parents are legally allowed to give their children alcohol, at home, from the age of 5.