... Why not!
I has no children and have never been at parental leave, ... if I had been I would have business cards. I can just imagine all the people - who YOU meet. And the network you could build! The strength in the network by the connection through your children. If I was YOUR employer I would be very careful to have on going contacts with you. OR perhaps you have been thinking and made some other plans during your leave? Perhaps starting your own company? You are the boss in your life - but not for long - some little girl will sone bossing round you! Y our values are changing and someone else is more important now !