If I get taxed on my income, and then give half of it to you, should it be exempt from taxes because it was "already taxed?" The whole idea is that money is taxed when it passed from one person to another.
Thankfully there are emerging alternatives to money that have been increasing in usage for about 13 years and offer more control to the individual as to how the resources under their domain are allocated exactly and transparently thru governance that are more accessible work arounds than the trusts, charitable writeoffs, etc.