Ah ok get you.

The fruits of your labour argument is a good one which is why I would advocate a 100% inheritance tax.

I'm less convinced by your freedom argument, taken to its logical conclusion, murder should be legal because you're removing the rights of the murderer to do what they want. So I guess it comes down to where you draw the line?

Consumption v investment. There are good arguments each way, I don't know if higher inheritance tax would lead to higher of either. I think they tend to form a balance though.