Slippery slope. I didn't say anything about raising the age to 30.
However, I DO think there ought to be a legal age for buying a handgun.... right? Can't let 8yo's walk into the gunshop and plunk down the cash for a POS HiPoint 9, right?
Any age we set will be somewhat arbitrary.
18 makes a certain amount of sense, as this is the age of legal responsibility, and the right to freely contract, marry, enlist, etc.
21 also makes a certain amount of sense, as this is approximately the point when scientific studies say the brain is near to full development.
All I did was lay out a few points regarding each of those possible choices... didn't say I was firmly in support of A or B, in fact I said I was undecided.