I think that you don't understand how small, and useless for any purpose except "storing" powders, the bags are.
We are not talking about anything you could use to store gun parts or carrots for lunch. They are about the size of a quarter and have no depth. That is, you could slide one slice of a carrot into one ( a thin carrot), but the top would not close because it would not seal.
They are ideal for powders and of course, those who store their washers in separate bags, one each.

Mikem,

As for their usefulness, I brew beer and some ingredients come in those little baggies. I also used to collect stamps which also sometimes come in those little baggies. I buy computer parts all the time. Tiny screws come in little tiny baggies.

But their utility isn't the question here. I think that you don't understand that banning little baggies isn't going to impact the drug trade at all. It's a feel good measure. "Hey look, we're doing something. We banned little baggies."

Stamp collecting? In a small bag as opposed to between transparancies with or without backing? Stamp collecting sure has changed since I was younger. We worried about them getting lost as well as protecting them. We liked to display them in albums too.
In any case, the reason for banning stores from selling the stamp bags is not to prevent legitimate use but to help identify drug dealers for the police to target with investigations. The laws are not making it illegal for you to possess stamp bags, but it will inconvenience the stamp collectors who normally purchase a thousand stamp bags a week at the local bodega. They will be forced to purchase them elsewhere and will probably attract a look from drug enforcement investigators.

Let's be frank. This is about drug laws and the libertarians who think that there should be none. There are a lot more legitimate uses for ammonia nitrate of any quantity than there are for gross quantities of stamp bags and nobody is complaining that manufacturers report sales of it. And that is what this is about. Allowing the police to see who is purchasing large quantities of tiny bags without having a legitimate use for them.

Mikem,

Thats the old "If you aren't doing anything wrong, you have nothing to worry about" argument.

I'm not buying it.

Wow, someone is actually defending this asinine policy.

Just wow.

Things are much more in the shitter than I thought.

They are simply banning Assault Ziplocks.

"Wow, someone is actually defending this asinine policy."

Yeah, I tried. But you can't slip anything by the pro drug dealer crowd.