Yep, I've got lots of mons that I want to release right now, but I'm wanting til I get the 200 mons medal (the highest one).
I don't see any need to release them, to be honest. It does get a little difficult to find the ones I want, but I can always ctrl+f.
Yes, I already have actually! I have a lot that I caught on impulse, or that I thought I wanted them at the time but now I don't.
I've thought about releasing my Squirtle. But he was my very first Pokémon, so I got emotionally attached.
Yes so I could tidy up in the colection a little and I've released a bunch of legendary eggs and some mons I caught only for the sake of the Azelf Challenges.
Probably I'd release some Eggs, but I'll keep all my Pokémon. I 'wasted' Pokeballs/PP on them, so it'd be a shame to throw them just away.