So to those who are filing federal and state tax returns for 2013, did you pay your use taxes? Do you know what use taxes are?

I'm in the middle of doing my federal and state (IL) taxes for the first time, and after getting to the line about use taxes, and after doing some research on what use taxes are, I've come to find them to be ridiculous. Also, apparently most people don't even pay use taxes when they are supposed to. I have seen an article saying only around 1.6% of Californian (or of some specific region of California) taxpayers have paid their use tax liability in 2011.

Anyways, use taxes are basically the sales taxes you did not pay when you bought stuff online (amazon), or in other states which have no or lower sales tax rates than the state you are currently living in and in which you used/consumed the stuff you bought online or out of state.

Thoughts?