To be, or not to be

Recently, my boss asked me to be a manager.
Well, it's a promotion offer and a good thing because of several reasons.

1. Better income
• I have to bring up my daughter. :)
2. More authority
• Including budget (hopefully)
  

But, for me being a manager means retiring from the front line.
Especially, in Japan, it's not easy to be a playing manager.
(BTW, I know many praying managers. :o)

Thus, I've gotten a big problem.
To be, or not to be ... a manager. :(