I breastfed my first child until he was one, with this second baby I don't want to?

Breastfeeding was a bad expirence for me. I was uncomfortable, time consuming and just hard. But, I was able to work through it using a pump. But, this time with #2 I just want more freedom. Pumping at work and bagging and sorting milk just isn't something I feel I have time for now. Especially with a toddler who also needs me. I feel terrible because I know how beneficial it is. I willl at least pump for 4 weeks while im''m off work. I feel so guilty! My MIL tome I was selfish. what do you think?