Because I earned it and that's how I want to spend it.

Did a charity work for my money? No. They just supposedly will (but possibly not) use some of it for something aligned with my interests. Just like giving my money to my children.

You earned it, you spend it. Not your children. They’re gonna have to work too!

After a certain stage, parents are working knowing that the value they are generating will be passed down to their children, it is no longer for them in their lifetimes, but their employer and society still benefit.

If parent’s work beyond what they can spend in their lifetime is not given to the children, who would continue to choose to work? Already in Canada you can exceed 50% tax rate and many adults who could see more patients, write more books, take more cases, do more work, choose not to as the marginal benefit decreases.

Ok, but then you end up with children who don’t need to work for as long because they have a head start. And so on until you have oligarchs who are born eating caviar and will never have to work.

Because families passing down assets is a tale as old as time?

Be careful making such massive leaps, you might injure yourself.

You're the one that thinks "it's as old as time" is a good enough reason to keep doing it

1) Sorry I didn't list other reasons in order for you to understand that there is more than one reason it's done. 2) You bringing up feudalism is still completely random lol. I get you're trying to make the point "just because something was done in the past doesn't make it a good idea", but the contrary is also true - just because something was done in the past doesn't make it a bad idea. Using your logic, I suppose we should stop cooking food since it was done in the past and everything done in the past is akin to feudalism lol