
You would be surprised about how many cards end your turn in this game.
As long as you failed at least one skill test during your turn, you essentially say "Nope!" when the game really wants you to not be able to do anything anymore. This gets especially laughable when the "end your turn" effect comes from a failed skill test (and even for only that one action it's worth playing Lifeline, because giving the scenario the finger is always a good thing).