1. Whoever dropped off the girl on that planet.And, kind of, her sticking around just doing nothing.
2. Kylo-Ren is just like. Nah I dont wanna be a Jedi. Imma kill everyone cuz i got Grandpa vadar's helmet.
3. The bad guys blow up three planets cuz "i'm evils!"
4. The people on that one planet seemed high-tech and well funded. So why is this "resistance" or w/e so poorly outfitted?
5. So these bad guys have had however much time to create a giant death-star? I mean the galaxy is big, but really? No "disturbance in the force"? Nobody working on this space-tweeted somebody back at home?
6. Han dies cuz PLEASE HATE THIS BAD GUY..
7. Han is dicking around smuggling stuff? NOT for the resistance ..no..no. Just doing it cuz he likes it. He's like 80...
8. Han just goes up to Kylo/Ben and is like "hey buddy". Like he never tried this before? Also why doesn't anyone else looking on just shoot Ben?
9. WHY THE FK kill Han? Why? It felt like another kitten thrown onto the fire just to make us hate the badguy.
10. Luke is just sitting on an island....that's it.
11. How was the empire able to recruit so many people anyways? I mean they lost. And you'd have to imagine after they lost, that the rebel alliance would have spent time recruiting and taking over. Making taking some star-destroyers that weren't completely destroyed, and refurbishing them. But no....I duno. Here's a link with better explanations I mostly agree with.
http://www.huffingtonpost.com/seth-abramson/40-unforgivable-plot-holes-in-star-wars-the-force-awakens_b_8850324.html