I agree with you, taxation does nothing but enable the government to work on projects it deems important in the name of helping the public. It's inefficient and obviously open to corruption.

If we really think that it is unjust for money to be concentrated in the hands of the rich and should go to the public instead of their heirs or private interests, there should be an option of zeroing out one's bank account. That is, literally destroying money (not to be confused with wealth). This should have roughly the same effect as dividing up one's fortune and distributing it evenly to all holders of that currency.