We do not have your income tax return in front of us so only you know what you pay. However, in the past you have stated that much of your income comes from long term capital gains. As you are well aware, you get a much lower discriminatory preference in the rate on that compared to wages of the same level. A million in capital gains only gets you a tax bill of about $150,000.00 while a million in wages hits you between $330 and 340,000.00. So you are hardly paying at the top when all things are considered. And you also stated that you inherited money. Sizable portions of that were exempted so no tax was paid on that. Millions upon millions of dollars could have been given to you and you paid ZERO on them. That is hardly what one thinks of when one claims to be paying "the top rates".
I believe you may have just answered you own question about why some pay the estate tax while others do not. And please remember, there is no relationship between taxes paid and services used. That sort of relationship is for the retail shopping experience. So it is irrelevant.