Season 6 and 7 worth the watch?

I just finished season 5 and I honestly didn't enjoy it. I thought 1-4 was great but season 5 seemed a bit ridiculous. Just constant unnecessary battles ending with them destroying the survivable patch on earth?! So much destruction and madness. When Monty read out Jasper's letter I completely agreed. They just keep making ridiculous and destructive decisions and continue to kill each other. None of them deserve to survive (except Monty and his poor algae). Rant over. Am I going to hate the last two seasons?

EDIT: ok I started S6 and I'm 4 EPs in and I'm definitely enjoying it more than 5.