Should you watch sweetness and lightning? YES! It is the nicest and sweetest anime i have watched. In my opinion, it is a masterpiece. The art is beautiful, the characters are amazing, the story is great and everythinng about it is simply fantastic. If you are only into to mecha, then you probably wont enjoy this at all, but honestly i think anyone should give it a shot if they have even the slightest bit of curiosity about the show. It is seriously a masterpiece and is definitely worth your time. It is a really beautiful anime. It is very enjoyable and in my opinion irtdeserves a ten!