It definitely ended very neatly. Normally, I would dock a show points for that, but it was fitting. Walter White really is that smart so I wasn't taken out of the show when he literally thought of everything.
Anyway, as expected, the finale played out like an epilogue. They tied up every loose end that mattered. No, they never explained exactly why Walt sold his shares in Grey Matter. It doesn't really matter; what mattered was that he felt slighted and that was the start of everything. And Brock is going into foster care. They didn't need to show that happening. Sucks for him, but for Walt's narrative, it's fine to skip things like that. They hit all the important notes and that was all I really hoped for.
The scene between Walt and Skyler was absolutely perfect. I wasn't expecting Walt to be standing there when Skyler was talking to Marie. "I did it for me." That was one of the best character moments in the show and fitting for Walt's character arc. That admission doesn't magically fix everything between Walt and Skyler or make Walt's sins okay, but it was important for each of them. To finally admit that he wasn't really doing all that for his family (him first, them second) was really important for the finale. I wasn't sure they were going hit that note, but they did and the ending is better for it.
Meth Damon got what he deserved and that was awesome. Walt killing Jack before Jack could bargain with Walt's money was also awesome. Walt didn't care about the rest of the money. He killed Jack out of principle. I wish there was a little more between Walt and Jesse. Jesse choosing not to shoot Walt was an important character moment, but I wanted a little more. I suppose there couldn't be more than the simple nod Walt gave Jesse considering all that Walt did to Jesse (thought I did think for a second there that Jesse was going to back the car into Walt). It wasn't like they were going to hug it out and cry on each other's shoulders. Walt did tackle Jesse specifically to protect him from the machine gun fire (notably after realizing Jesse was a meth-cooking slave) when Walt easily could have let Jesse get shot the **** up which I took to mean that Walt did actually care about Jesse and he felt some remorse for what he did and saving Jesse was his way of trying to make up for it. Again, it doesn't make everything okay, but it fits into the theme of atonement that the entire episode had for the people close to Walt.
Typically, I'm pretty disappointed in endings of TV shows. I watch most shows on Netflix now so Breaking Bad was the first finale I've seen on the night the finale aired since Lost which was pretty weak. Breaking Bad's finale was particularly strong. I don't really have any negatives to say about it.
EDIT: I spelled "breaking" wrong at one point and I couldn't let that go.