i'm in your conscience
I normally evolve everything, though I'm not a fan of evolving Nidorina and Nidorino. I really like them and I either don't evolve them at all or just wait a really long time. But I have them both on my Blue team I believe...no plans to evolve either of them. I also dislike evolving Quilava because it's one of my favorites and its design is really nice and I can scoop it up and hug it and I can't scoop up a Typhlosion u kno.
Also want to note I got really upset when my Torchic in Sapphire evolved...lol. I love that line though, but at the time the gen was new and I wasn't used to all the Pokemon yet and I loved my Torchic so I was like ".........what no......YOU CAN'T.......TORCHIC NO WHY DOES IT HAVE TO BE THIS WAY"