You're running into the classic quandry everyone does. You add an employee but the gains are marginal vs the costs at first.
I'd rethink it if it's mostly about that "having someone to bs to" thing.
First, you might be dealing more with his BO that with his BS!
Second, it's unlikely the type guy you are gonna be able to hire at a price that makes it profitable is going to be a fascinating conversationalist. Especially if you don't speak spanish or like death metal. Check out Sirius for Howard Stern or talk radio if you're bored. You'll find yourself talking back to the radio a lot anyway.