Okay, I just had this weird idea come to mind, and that is the worst thing about being a Pokemon that evolves with an evolution stone.
Lest also include:
Your an Eevee.
You already have big plans on what you want to evolve into to.
You like getting wasted.
You like party's.
Now picture this, you wake up with one hell of a hangover, and when you look in the mirror and that groggy vision cleans up you see a Flareon back at you, all while you wanted to evolve into an Espeon for the psychic powers.
Now you are a fire type in your insurance premiums just went up ten points.
All ways go to look at the cons, and invest in fire retardant.
And this is one of those weird things that comes to mind.