Breast pump if breastfeeding

Lisa • Pregnant with our first baby boy 💙 due sept. 14, 2015. 👼
Hi ladies! 
Do I really need a breast pump if I'm
Only breastfeeding?! My insurance will pay for a pump so it's not about the cost, I'm just curious. I guess I'd need it if I go out of town or am away while the baby needs to eat?