Well, I really don't know what to say about Age Verification.
I agree with some arguments, but I do agree with Grix.
I'm 16 and I feel I'm can handle high powered lasers because of all I learned here. I think there are also other people like me.
On the other hand, I think how I was when I was younger. All I cared was about burning. I had a credit card and nothing would stop me. Luckily I've always been myself and more mature than the other buys.
Now, I have older friends that have 100mW+ lasers and have no IDEA of how it works. Asking for protection is, then, worthless. I've done my part, convincing my friends to buy at least the $8 ones (since they all have greenies)
That's a very complex question.
Now, I won't comment on what Tech_Junkie said. He's also right.