Nice comment though I think you may have a few misconceptions:
1) You say we need to raise more taxes and I say we don't. Who is right?
I didn't say "more." I said society needs to raise money through taxes. I don't see that statement as controversial.
2) Money that is handed down to heirs was once earned income which had taxes paid and then invested. If in a taxable account those investments grew that shed some dividends or profit sharing on which taxes had to be paid. Therefor this money has been taxed already and more than once. If it is in a 401k or IRA, that money goes to the heirs and they will have to take RMDs and pay taxes at the marginal rate.
Not true. The three richest individuals in the United States are Bill Gates, Jeff Bezos, and Warren Buffett. Each of those men has almost their entire net worth in the form of unrealized capital gains. See also the Walton family, all of which become billionaires through unrealized capital gains of Wal-Mart stock.
3) Just about every family that leaves large amounts of wealth to heirs, over 2 generations the heirs squander that money which goes back into circulation and taxes are paid. The money is not lost forever.
So why not tax it? It seems like taxing money that will just be wasted anyway is far, far, far preferable over taxing money that is used to pay the mortgage or your kid's college tuition.
4) If we did so choose to levy taxes on estates further, those same rich people would create loopholes and ways to get around those taxes. You ever meet a child of rich parents that are trying to divest some of their wealth to stay below the estate tax? These kids receive $28k a year in tax free gifts. If married they receive $56k a year. Add another $56k for each child they have. All this before creating a trust to help minimize taxes further.
How do you know? Loopholes are created by tax law. Loopholes can be closed by tax law. And even if there were loopholes, what is the basic objection to taxing money people earn but not taxing money people don't earn?
Is there something magic about unearned money that somehow makes it more pure than money you had to work for?
5) Telecaster, it is very easy to sit back and say, lets tax that person that made more money than me. So easy to say, those kids didn't earn it, why do they deserve it? Well, why is the government more deserving of that money as compared to the progeny of the initial earner? How is that even remotely fair?
This is a red herring AND a strawman. I didn't say any those things.
Your question is about taxes
in general that you can apply to any tax you choose. For example, why does is the government more deserving of money instead of the oncologist who earned it by curing cancer? Why does the government deserve a share of a kid's salary who spent his summer flipping burgers? I'm simply comparing estate taxes with income taxes.
Since there are now, and will always be taxes, to me it makes sense that taxes be fair. I've never heard a good argument why earned income should be taxed and unearned income should be tax free. You statement that most people simply waste windfalls isn't a good argument that windfalls should get preferable tax treatment over wages. A lot of people waste wages as well.