[SixOfSpades]

You mean they're the only *slashing* weapon Druids can use. (Spears and Daggers are Piercing, and Darts are Missile.)

The traditional Druid rules forbid "the intentional use of any edged tool against any living thing," so personally I think all of the weapons I named above should be restricted. But then, of course, I'd have swarms of Druid fans mad at me for leaving them with nothing but Clubs, Staves, and Slings.