Cliffhangers

Justin and I have recently been watching tv shows on DVD. We usually watch sci-fi or fantasy type shows, and recently we've been watching "Sliders". It has five seasons and starts off really good actually. We watched the first three seasons before we were married and just finished the last episode of the last season today. The last season was extremely stupid compared to the rest, but I expected the last episode to resolve some issues, like finding their home planet and things like that.
NOPE! I don't know why, but so many shows love to leave the watchers with no answers! Why is that? The episode ended with the main character jumping into a wormhold with no way back, not knowing where he was going to end up or even if he would survive.
We also watched "The Pretender," which also ended in a stupid cliffhanger.
I'm going to stop watching tv if they keep doing this to me. It's like not seeing the last 15 minutes of a movie-you just feel a resolution coming and then BAM!, it's over. It really drives me crazy.