For instance, maybe you think our current tax rules are bad, but perhaps you'd like the ability to have and enforce any tax rules at all, even when some of your fellow citizens disagree with you about what rules are ideal.
I think income taxes are dumb. Instead I think taxation should begin with Pigovian taxes on negative externalities, then if more money is needed Georgist taxes on supply-inelastic factors, and then finally if the government somehow needs even MORE money it should resort to consumption taxes like VATs and stop there. Does this method inhibit the ability to collect those?
Pregnancy is certainly costly (and the abnormally high miscarriage rate appears to be an attempt to save on such costs in case anything has gone wrong), but it's not that fatal (for the mother). A German midwife recorded one maternal death out of 350 births.
Forager societies didn't have below-replacement fertilities, which are now common for post-industrial societies.
Having children wasn't a paying venture, but people had kids anyway for the same reason other species expend energy on offspring.
Tyler regularly disagrees with his colleagues. If he were one of them he might think to himself "Alex is the best truth-tracker, so I should check what he thinks on the issue", but Tyler doesn't regard truth as something to optimize for.