A premature death does not only rob one of the countless instances where one would have experienced pleasure, it also saves one from the innumerable instances where one would have experienced pain.
It would be an instructive exercise for the skeptical reader to try to frame a definition of taxation which does not also include theft. Like the robber, the State demands money at the equivalent of gunpoint; if the taxpayer refuses to pay, his assets are seized by force, and if he should resist such depredation, he will be arrested or shot if he should continue to resist.