I always do ^_^
Heck, about three or four times last night when I was about to fall asleep, I had an idea and had to wake up, open up my program and wrote out another episode idea.
I'll admit I don't have an ending in mind either, I know I should but honestly, how many shows get a proper finale? Especially in this day and age where they keep resurrecting tv shows for "one more season" or a "movie" on another network. I know a bunch of the beats, but the core of the story, the mission of the week, that's eluding me.