In general, I agree.
In the world of risk management we avoid spending more protecting an asset than the asset is worth (which is frequently more than just its acquisition/replacement cost). Sometimes there are intangibles that justify additional expense (customer confidence, public perception, etc.), though. I can translate that to also say that a snake is a living thing worthy of vet care regardless of its financial value (e.g. an intangible value). From a purely business perspective it's an easy equation. From a human perspective ...not so much.