Would you care to elaborate why? Estate tax (which IMO seems way too low in the US) makes it harder to accumulate generational wealth, and is a good way help prevent inequality.
Loving your children can be one of your chosen "ends."
What is abhorrent is when the government choses your ends, for you.
We should not want that.
We should not want government-forced sacrifice instead of giving an inheritance to a beloved person according to our own choices.
I would argue that people who want to ban inheritance love their "brothers" (random and probably non-deserving strangers) too much, and love their children too little.
Recieving an unearned $11.70 million untaxed income for free is the opposite of "our own ends" and "sacrifice". It sounds like you fetishize everyone else having a hard time but want to make a special exception for yourself and your kids.
Can hiring only white people be one of my chosen "ends," which the government has no business interfering with? Can serving food to only white people be one of my chosen "ends"?
Yes. Freedom does not work if we are not also permitted to make irrational choices.
What if the state thinks it's stupid to not only serve white people? That was true in my home state within living memory.
What if the state thinks it's irrational to not be a Christian?
What if the state thinks horses are "good enough," and cars are too dangerous to be allowed? Today's America would never allow the automobile to be invented. And Big Candle would probably lobby against the creation of lightbulbs.
Places that practice the kind of racism you are talking about will be the subject of ridicule and will face economic stagnation. Whether on the level of a single establishment, or a country. Rightly so. The civilized world--if there is one--will move on, and will help the discriminated relocate to free societies. (It's a shame we are not doing this for the Uigyurs--we should.)
We should want to live for our own ends, not for the sake of other people.