This is a genuine question, please don't take this as sarcasm or something. But I have no "good reason" for buying this. I just want to have a very powerful laser I can use. Can you tell me "good reasons" for owning a laser like this? I'm curious because although I will be really careful and wear glasses, but in the end, I will be buying it "just for fun" and I don't see anything wrong with that.
Sure, see this:
Reflections from shiny surfaces alone can cause permanent vision damage. To the person earlier who said this is like looking into the sun, it's quite a bit more power than that. If the laser can ignite a match, what do you think it will do to the delicate cells in the retina of your eye?
Shine the laser on a white wall, damage someone else's eyes, what other reason do you need? Just for fun. It is not like there a reason for these things to be banned, they are just silly little toys (that can cause blindness) that shine in real pretty colors. So pretty. I'm pretty sure spending 200+ dollars to burn some masking tape and matches with the laser is going to be worth the risk. Specially with the super-high quality googles that surely will come with the laser.
I asked a genuine question. You replied with sarcasm. I'm asking for USE CASES. Tell me uses of this. He stated that unless you are buying for "good reasons" you shouldn't buy this. What are the "good reasons" ? Tell me some.