There is a fine line between "voluntary" charity and "mandatory" charity, which is technically slavery, and there is but one way to put an end to slavery, to refuse to produce.
It's not charity because I'm not taking any property from you. I'm depriving you of the ability to profit, a right which you were never guaranteed in the first place.
Your stand point implies that the fruit of the mind does not belong to the bearer, as such you are effectively rendering professions such as mathematician, physicist, philosopher, economist or doctor unprofitable.
argumentum ad consequentiam