There was a glaceon who once punched me just for existing, a sylveon who slammed a door into my face, a espeon who was obsessed with a umbreon and did some... questionable thing, the list goes on...
Just in... my experience
You're asking me about what YOU should evolve into? Well I wasn't any better...
sooo evolving should matter on what you want and your surroundings each evolution has its own pros!