Your point was we should take money from those who got the greatest benefit from our society. By that reasoning, people who are alive now and would have died otherwise have it the best, right? Or does that extra boat or summer house so important that it's a better benefit than living?

Listen very closely: whatever system you set up, there will be rich people. If you tighten the tax laws, the rich will be criminals and politically-connected people. But there will always be rich people. It's true in any societal construct. They will always have a better lifestyle than the average person. Given the criteria you have presented, you will never end your quest to find rich people and tax them.