It's exciting to meet up with your friends and introduce them to your baby. Some of these friends may have already had children, perhaps a few years ago now, and some don't have children. It gives you the chance to chat about something other than how much sleep you got - or didn't get - last night, how many nappies you changed yesterday or what the best ways to start weaning are...!
However, it's also just as great, and reassuring, to make new friends after having a baby, other mums, who are going through the same things you're going through, at the same time.
Look into mother & baby, mother & toddler and mother meet-ups around your area and when you're having a 'I can take over the world' type feeling of a day, go to one of these groups and meets some Mums just like you!