Over 50. Just read Judith Shklar's The Liberalism of Fear https://philpapers.org/archive/SHKTLO.pdf, which argues that minimizing fear is a valid political principle:

"Every adult should be able to make as many effective decisions without fear or favor about as many aspects of her or his life as is compatible with the like freedom of every other adult."

Further, "Apart from prohibiting interference with the freedom of others, liberalism does not have any particular positive doctrines about how people are to conduct their lives or what personal choices they are to make."