I always look at it from the opposite side - it's my choice to leave my money that I made to my descendants. If I didn't want to do it, I would have donated it or spent it on stuff, or simply written them out of my will. So yes, maybe they didn't do anything to "earn" it but it is my choice to give it to them - just like we pay for our children's education and clothing and buy them presents and gifts, one should be free to chose to leave them a massive pile of money. That money should probably be taxed, sure, but if we approach it from the angle of "should I be free to leave my descendants inheritance" then I think the answer is a resounding yes.