I'm 22 and I still collect plushies. I have things like Pokemon, Neopets, Beanie Babies, Kirby, etc. I used to name some of my random animal ones, Neopets, and Pokemon when I was younger, but I've stopped doing that now. (Though I still remember some of the names I gave them) I also used to sleep with a lot of them when I was younger, but my room is such a mess that I could actually lose them if they fall off when I'm asleep. Because of that, I only sleep with two Kirby plushies now.
Yay you're not alone! I have a giant bear from Costco. Its about 4 feet tall.
I have over 40 plushies, medium and small. Some tsum tsums, hello kitty, gloomy bear, pusheen, my little pony, ty beanie babies, rilakkuma,miffy, a giant elmo, etc etc. I try to get one of each of my favorite characters.
I have an entire top shelf of stuffed animals from when I was 6-7 and now I'm almost 20 lol. There's at least 30-40 stuffed animals up there and I can't bring myself to throw them away, so sometimes I'll give them away as gifts. As a kid my family used to go to Vegas 2-3 times a year and we'd come back with bags full of them, so it built up over the years lol
I loveee stuffed animals and other plushes and I'm turning 26 in October. My boyfriend rarely lets me buy them now though. hahaha I reeeally want a set of Steven Universe plushes