Is breast really best?

With my first child, I never attempted breast feeding. I went right to formula and never thought twice about it. I’m pregnant with my second child (yay!) and I’m debating whether to try breastfeeding this time around.

Is it really shown to be healthier for the baby? What are some pros and cons to breastfeeding? What are some things I should expect to be different if I don’t formula feed again?