Originally posted by Rhapsody:

I'd rather not have Valheim become tower defense game. It's silly but it works. Other features of ballista like the inaccuracy are bigger issues IMO, but they're already addressed in the PT branch.

To be fair, there's really not much of a need for them at all. Not much really comes at your base, and you can always just dig a moat around your base or make it up in a non destructible tree.