"Good to the very last drop." What's wrong with the last drop?

I definitely present OCD when it comes to getting the last drop out of a jar, a toothpaste tube, or what have you. How about you? Do you figure the last drop’s no good anyway, like the Maxwell House slogan seems to imply, and just chuck the container when it gets low? Or are you more like me, always figuring there’s one more drop in there if I just leave a liquid container inverted long enough, or apply sufficient pressure to an empty toothpaste tube with a large pair of pliers or a vice?

Do those squeeze bottles of condiments like ketchup and mustard drive you nuts because there’s at least a quarter of a bottle left on their walls when they begin to sputter and refuse to dispense a steady stream?

BTW, I actually drink Maxwell House® Coffee, the originator of the “Good to the very last drop.” slogan. But I do avoid the last drop of it, just to play it safe.