It is the parents responsibility to raise their children. It's not my responsibility to have to show ID(I'm a grown adult, there is no mistaking me for someone 18 and below.. though I don't think there is any such laws in any country I would want to live in. this seems to be a fairly US centric world view).

"Think of the children"? That's the argument here?

Do you think a business should be able to sell alcohol to a 10 year child? It’s not the business’ responsibility to raise a person’s kid, afterall.

There is a big difference between storing someones credentials in a porn identification database vs showing your ID to some clerk. These things are not identical.

Of course they aren't identical. The point is that prior to the internet everyone thought it reasonable to prevent kids from accessing pornography. Now it is widely available to them online. Some people think this is not right. There are no perfect solutions.

I don't disagree. The problem is that the solutions being talked about have a large negative impact far wider than the problem they're intended to address.