Developers who became project managers / owners, why did you do it and how to?

I have significant experience as a senior developer but the industry makes me hate coding as a job. I still love coding for myself just not as a career.

I found most project managers lives look quite easy compared to what we devs have to do with.

I might make the transition but I'm also curious as to how did you guys do it and did it improve your life? How is your workload? How would a senior dev move to full-on project management?