Anyone want to share your experience on Metformin?

I've been taking it forever, 1000mg daily.
A1c is okay. It'd probably be better if I had more discipline.
My weight has been stable for 15 years.
No bad side effects from it.
I don't like medication, but metformin is an old friend.

I didn't start metformin until after 23 years of controlling BG with Diet and Exercise. Took extended-release version (easier on stomach). Never did nearly as much for my BG (and weight) as diet and exercise. So I continued D & E, and added Glipizide a year later -- which helped a little bit more.