Well, just like Durant, Boogie came and knocked and the Warriors door. They gave him something and he said yes. The interesting thing is that he expected a lot of calls and got basically nothing.
In his mind, he got all "Boogie" and said "I will go to the best team and make them better". This would have been true 2 years ago, maybe.
This could be the last year of the Golden State Dynasty as next year they will be set to loose players in the free agent market. Most notably, Clay Thomson. His dad was a Laker and has a very good relationship to the organization. I definitely see him joining forces with The King and propel the Lakers to at least 3 championships.
Going back to Boogie, I think he is just a name splash and did waves in the league just so that people don't forget him. He never played in a playoff game in his tenure so far and we will have to see how he feels in being the 1st start - from the bench- and if he will be ok with shooting 5 times only in a game?