So you either don't buy much online, buy only from one place (that can provide a nice end of year report), or hire a bookkeeper to keep track of it, because the burden of calculating use tax otherwise would be extremely high.

Absolutely! If my state isn't going to come after me for use tax, which they don't, I'm not paying it. I don't believe it is just for the government to steal the rewards of my labor at every turn, so I protest excessive taxation in any way I can.

If you want to roll over and let the government pillage the rewards of your labor in every conceivable way, both coming and going, that is your prerogative; however, it is not one I share.