Exactly. Even if you win, you won't win anything of much value -- most (if not all) of the money will likely go to your lawyer. And you have a lot to lose, mostly wasted nerves and time you could have spent improving your business -- or simply living your life stress-free.

Defending even from bogus lawsuits is a huge expense of human energy for the non-experts (I'd wager that's 99% of the world's population).