Yeah, I'm a compulsive weeder, too. Glad to know I'm not the only one.
I used to say to my mom. "Going out to pull a few weeds -- back in five minutes". Two hours later, I'd finally come back inside.
Weeding is like that...Totally Mindless.
I don't know where your mind goes. La-La Land, I think. But it's so relaxing. I find myself pulling weeds as I walk by the garden. Just a few here and there, but it all adds up. And helps fill the composter.
It's good for the garden, too. Weeds take up nourishment and water. Why let them have those things when my other plants need them?