To be manager you have to be specific personality. You have to be able to treat with different personalities, solve non technical issues, be prepared for work in multitasking mode - lot of issues at same time, with different severities, from different sources and requirements.
Management problems are hard defined, so you can hardly Identify correct procedure, verify correctnes of your choice and the most of time it's running for the long haul.
Probably in most cases you will not see any results (like working code or system). Happy people just will not complain but they will not thank you for that, but on the other hand unhappy people will complain and swear. And you will see and hear it.
You are also inbetween two stones...upper management or customer and your team.
This is not for everyone. few years ago I had same intentions but after few discussions, observations and experiences i regreted my decision.
Own business is little bit different story. I am doing what i want...i wanna design something ...go for it, but still have business decision making rights.