Weird... they don't usually break the unspoken pact. Do you by any chance live near a park? Col. Summers, perhaps? My theory:

nice weather=> hipsters/reggae trolls drink beer in the park => security and eventually cops are inevitable => your usual collectors go hang out in the park where there are always more cans being emptied and nobody else wants to be caught with them

This is actually a real problem. If my regulars stopped showing up, my neighbors would think horrible things about me.

You are pathetic alcoholics. A real boozer would just throw the damned empties in the trash where nobody can see it. Posers.

I may be a drunk, but I am NOT wasteful.

My household already produces more garbage than we can fit in our can. Anyway, there is a delicate grocery store/alcoholic/can scavenger economy which I'd be afraid to upset. You know not the consequences of what you ask!!