It shouldn't actually take that much bravery. If your case isn't completely frivolous, isn't your maximum loss limited to the court filing fees and a lawyer payment that you know in advance and can decide when to stop paying? It's not the same as getting sued.
Can't you be ordered to pay the legal fees of the person you sued if you lose badly enough?
Yes, but this only really happens if your lawsuit is bad faith or frivolous. If they have a valid reason for the suit but just lose, this won't happen.