There were two strong characters within the band: Roger Waters and David Gilmour.
They are so devoted to the music that they are still concerting.
A reunion was intended. Their strong personalities are like two poles of the same kind of a magnet: they simply can not attract each other, so the reunion was merely formal.
After they started to act on their own, they changed a little the overall Pink Floyd style.
This change made me move in Roger Waters' way, although I must admit that David Gilmour has a better voice.
Pros and cons... These Are the Pros and Cons of Hitchhiking!