I do as well. I sum up my online purchases from Amazon, add my wife's in, and pay the money. It goes to funding the things I use: Roads, firefighters, the library, the park next to my house. Heck, there was a fire two weeks ago in the apartment building next to where I live-- we sure as hell appreciated the firemen who came at 4:00am to prevent a catastrophe.

The argument above about how it's impossible/expensive/complicated/etc. to collect sales tax seems exceedingly bogus to me especially given the nature of HN: Sounds like a business problem to be solved, not some byzantine task. Someone should go make an online sales-tax-computing web service and be done with it.

Oh wait, someone did: http://salestaxwebservice.com/, http://www.avalara.com/products/avatax/calc, et cetera.