>>121696549My best guesses as to why this happens is because either
A) They start out light hearted in case the show is a dud and and gets canned after one season they lose the ability to finish that mommy/daddy issue story arc.
B) Mindless replication. They probably saw Adventure Time and thought "Wow, this is cool and interesting" and without understanding why it worked for AT, just went and did the same thing.
C) They realized the characters and plot have no depth and try to make things darker to hide that fact.
