The same goes for knowledge. Yes, you “might need” Latin one day. Maybe a time machine will strand you in ancient Rome. Still, does it make sense to study a dead language for years to prepare for a scenario you almost certainly won’t face? You cannot retreat to agnosticism. “No one knows if this trash will come in handy” is a crazy argument for hoarding trash. “No one knows if this knowledge will come in handy” is a crazy argument for hoarding knowledge.