Death tax

Despite my recent trend toward libertarian posts, I'm not at all averse to taxation. I'm in favor of taxes in the following order:
1) Pigovian taxes (externalities, e.g., gasoline, cigarette taxes)
2) Estate taxes (death tax)
3) Consumption taxes (sales tax)
4) Production taxes (e.g., income)

This image gives me pause on my enthusiasm for each generation earning his/her own through high estate taxes: