Who said proverbs must have a moral? They often don't and this one doesn't .A proverb is simply a short pithy statement of a universally or commonly observed truth. The band the Rolling Stones took the name because it suited them.They were never in the same place for long, being on the road, and they weren't old ,boring, steady people but active, questing young ones. Now they are almost steady people: one has archaeology as a hobby, for a start!
The proverb is neither negative nor positive.