Really doubt that Mew can suddenly change into Mewtwo! so I'll hatch it and then switch to my Alolan Vulpix. That one, I'll evolve for sure!
Eventually I will, might not happen till Lv. 100 since I've gotten into the habit of leveling stuff to 100 first.
I didn't end up evolving my Sneasel but right now I am focused on taking my Litwick to level 100 and making it a Chandelure.
Yes, or well hatch really because I want the points it gives for the SS and I can use it for my living dex too, win-win.
I hatch or evolve all of my Pokémon as soon as is possible. I just love evolved Pokémon. There are a few exceptions (if I ever find a Crogunk, that one I will probably never evolve into a Toxicroak).
Yes, but Pawniard evolves at level 52 iirc and it takes 5 posts per level, so this might take a while.