I hate series not wrapping up, and just ending on a cliffhanger

It's like abc did with show, flash forward. I didn't have any expectations when I started watching flash forward. But it got very complex and deep. It had multiple layers of characters and different storylines that some eventually connected through show. They make the show a mystery, don't tell u Mutch about who or y exactly the flash forward happened. Because by the end of season, boom, another one happened. Big cliff hanger for the new upcoming season. It would have been great season finale. But it ended up the series finale. So I got no answers to the hours of time I spent watching. Yes, it was a good watch. But when u get left like "V" or this show, just hanging. It really sucks. That's my major beef with network TV. But if u look, recently FOX has been only network that cares about ending shows right. They bring back shows for a last season. Unlike ABC, NBC or CBS. 2 great shows from ABC. And they cancel. Leave us hanging. It's crazy to expect people to keep getting invested in there shows if we know. I'll never get an ending. I hope someone realizes that. How hard is it to make at least 1 episode to try and wrap a storyline up. That would be better than being left on a cliffhanger forever.