And just because its ending isn't happy isn't worth watching? I don't think that has anything to do with it; it rather shows the psychological pressure that cults can inflict on the people who belong to them.

In the end, everyone made their own decision. That it wasn't the best one? That's true, but that also shows that everyone is human and that their emotions control their decisions, just like many people.

I found the series quite realistic, which is why I really liked it and recommend it. It makes you think. And like you, I hope for a second season, but I doubt they'll make it. Cheers!