I sincerely agree (being an extremely new manager who didn't stop developing).

Also, if your managing position doesn't allow you to continue developing, open source software is always there, waiting quietly for you to dive into it in your free time. True, you lose touch with your software, but at least you don't lose touch with software development.

I did that when I couldn't code on my own project and it kept me sane - and taught me a few things about devving, so when I came back I had some loot to share with the others.