What is the purpose of going to church? [Spirituality & Religion]

This is a legit question I have, I mean what are we truly doing when attending church? What does God want to get from us by going to the church? And another question, is it good to go even if I have my baby keeping me busy while I can't really listen to the missionary? I like attending church, but it's hard to be really ''there'' when I have to look after my little one.