I kinda felt sorry for Walt, I know that not's popular but he tried to make amends at the end.
Your feelings are understandable because Walt was either intentionally or unintentionally portrayed as being a
Jekyll & Hyde (disassociative disorder) personality and you are responding to the
good Walt, the gentle chem teacher, loving husband and father. But as the series progressed we are shown more and more of the alter-ego. Walt's demon side.
This element of the tale, combined with some of the best acting I've seen in a tv series, could have been the basis for a truly sophisticated and extraordinary production. But they spoiled it by tossing in a lot of clumsy comic-book sequences, such as the ridiculously improbable, remotely activated, robotic machine-gun contraption used to wipe out the Aryan gang. That and several other absurdities spoil what could have been a true masterpiece.
Breaking Bad could have been much, much better if the writing staff had managed to maintain plot and sequence integrity and not drift off into simplistic fantasy.