I don’t think kids having easy access to lots of things is a good idea. However, I think adults having easy access to those same things is fine.
Why would you bring up that straw-man unless you think that you should still be able to control your children’s choices after they become adults? They may be your descendants, but when they are no longer children, you don’t get more than an advisory role in their choices.
You can’t possibly think kids having easy access to drugs is good.
If you do, you’re just speaking like an addict and I would suggest some help.