Ideally we should tax things that take us away from our collective values and reward or leave alone things that contribute to it.

IMO, we should tax things that don't contribute to actual growth. Basically companies that merely extract wealth from the system without contributing anything of value like high frequency trading and predatory patent trolls.

Taxing income makes no sense to me. Isn't that a disincentive to work? Work is one of the primary drivers of creating prosperity.