If we allowed players free access to usable workstations, they could skip over big steps of the game's progression. We've "talked" about the idea of allowing players to rent them, but that's a HUGE maybe later down the road. I'd personally like to see a repair quest for them, but we've got bigger things to finish up first.
With the new crafting system magazines, these broken workstations are a great place to find Forge Ahead magazines (improves workstation crafting skill) so you can build your own. No longer are you forced to pick up the advanced engineering perks for the workstations.