Re: Why was Kes written off the show?
Trek casts always leaned testosterone heavy. Replaced cast members were always same gender. The only exception might be Wesley/Ro, but she wasn't regular cast. I don't think Voyager would have changed the balance if Harry had left. They might not have replaced him at all, as they could have slid Neelix into the position.
Moe: I'll take the blonde!
Larry: I'll take the brunette!
Curly: I'll take the Black and Tan!
--Wee Wee Monsieur (1938)