In muy opinion, steam never failed us. Yes, it takes some percentage from the developers earnings, but gives visibility to their games. The developer could always just use another platform.

Steam is always developing new ways to improve user experience.

And its a serious company, for example, they don't use to make serious changes in the policies from one day to another. Its a company that doesn't insult your intelligence.

It has mod workshops, community, gamepad layouts support for the community... Etc