Inheritance taxes aren't an issue if the estate is valued - this is after all expenses, debts, etc. have been taken care of- at less than $5.25 million.

Numbers vary, but it's definitely fewer than 5% and possibly fewer than 1% of households that need to do anything at all to avoid the estate tax. And these are people who have benefited immensely from services provided by the government (if only the services that keeps people from stealing their wealth!) and are really doing quite alright; adjusting the tax code to make them do even better seems unfair.

Secondly I have never heard of anyone who didn't want to make more money because of their tax bracket. I do not believe this phenomenon exists, and even if it did, it wouldn't strike me as all that much of a problem in a population with unemployment as high as our own.