I found this site a while back - basically it will ask you a bunch of questions on your usage of your PC, and will came out with a list of recommended distros, and a list of reasons why YOU could like or not like it.
There are some similar sites to this one, but since I’m not familiar with them, I won’t post them. They are simply DuckDuckGo-able though.
Is one reason.
Cinnamon is easy to use though. Seamless transition from windows to linux for people who don’t know what they are really doing. When they get the hang of it, you can do some neat stuff with it.
Cinnamon is also an in house thing from the Linux Mint developers which is why it’s most common there. There’s a few other distros that have spins on it. Namely Ubuntu, Manjaro, Arch, Fedora, etc.