I agree with Mares, it does get a lot better when the baby's latch gets stronger and you aren't dealing with the newness of nursing, engorgement, etc. My recommendation is to try to give you and baby some time to get over the hump if you can, mainly because exclusive pumping is a lot more work than nursing from the breast (just because of setting up the pump, washing parts, etc; plus it's really hard to pump in public compared to nursing while out and about). I will be returning to work after six weeks, so I understand that pumping is going to be a part of your life regardless. It is nice, though, to not have to deal with it so much at night and on weekends. I've done a lot of nursing, a lot of pumping, and even my share of formula feeding, so I totally understand that you have to look at your situation and decide what is working best for your family. If you do decide you want or need to exclusively pump (or any other combination of methods), you aren't alone by any means. A lot of women have babies who are unable to latch, often for medical reasons, so pump and bottle feed indefinitely. It's not a "wrong" choice, just a labor-intensive one.
Feel free to vent here! When I had my first, he was in NICU and I couldn't nurse him for the first week. So, I was a pumper before I was a breastfeeder. Engorgement was crazy, I had to be out in public a lot at the hospital, and even after he came home and was able to nurse, he had a very weak and fussy latch. We got past the worst of it after about three weeks, and after a few months, our breastfeeding relationship was a lot more positive. All that is said to encourage you; at the same time, I can very easily have seen us going the other way and choosing to pump or formula feed, so I have sympathy for where you are at decision-wise. I really wish you the best in finding your way through this, and want to encourage and support you no matter how you move forward.
M/C at 8 weeks -- May 2000. DS #1 -- March 2001. DS #2 -- November 2002. (Ten year break!) DD -- October 2011. M/C at 8 weeks -- May 2013. Expecting #4 late July.