When people say they enjoy writing? What to they mean?

I am still new to writing as a whole and I've seen some post here talk about the enjoyment of writing and how fun it is for those who write. This might be a weird question, but that what does that mean?

I definitely love writing since I find it fun to play with words and build the stories that I want to see. But does that mean others really don't have a hard time writing or have moments where they feel stuck or can't seem to get it out correctly?

As much as I can say I love writing, sometimes there are days where I would feel like reading or playing video games or something.