K.
Do you quit everything that seems hard? I thought not. But it sounds like there are a few things that you can do for yourself.
I would schedule a visit with a lactation consultant about the latching. At 8 weeks this really shouldn't be hurting at all (I don't think). You want to make sure your son really gets a big huge mouthful of your breast - if he doesn't, take him off and re-latch.
Babies go through growth spurts and so there are, unfortuantely, times when you probably *are* feeding him a lot. But your son may be a lazy eater (taking 45 minutes to finish a meal rather than 20-30, for example), or he may not be getting much milk b/c of a poor latch. Another possibility is that he may be used to "snacking" and never really gets properly full. The problem with this is that the milk he gets first tends to be less fatty so it won't stick with him as long. If you haven't been alternating which breast he starts on, you should do this. Also, you can try feeding him on just one side per meal. Let him *completely* empty the side before you switch.
For the "lazy eater" issue you'll just need to find a way to keep him awake through the meal - tickle his feet, undress him, rub his tummy etc.
As for not pumping when he has a bottle - you really need to do this or the whole supply/demand thing doesn't work. For example, if you go out shopping and come back and he had 1 4 oz bottle while you were gone, you should really take the time to go pump 4 oz either before or during your next feeding (with a little coordination you can hand pump on one side while he eats off the other - you get A LOT of milk this way because he takes care of the let-down for you). Or if you're out for more than about 3 hours bring the hand pump with you. You can always pump in a bathroom stall (not glamourous, but it is ok). And if you bring a lid for the collection bottle you can probably even just bring it back with you. Breastmilk is ok for up to 8 hours at room temp.
If you're with him most of the time you really don't need an electric pump, IMHO (I only got one when I went back to work full time - used a hand pump for the occasional missed feeding).
I would not give this up just yet. DO talk to someone - either a lactation consultant or a good friend who has successfully breastfed a child (maybe your mom breastfed you?). It sounds like the latch issue is one you need to work on. This shouldn't be hurting by now. Good luck - hang in there - it gets better I promise!
ps - you are NOT a bad mother if you decide to give up. But I really do think that breastfeeding is worth the effort - in many situations it is so much easier than bottle feeding would be. It's a wonderful way to bond with your baby. It's great snuggle time. It's cheaper than formula. You *always* have food with you - it's always at the right temperature and ready to go instantly. It's wonderful comfort for your baby (after shots, for example). It's an amazing way to lose your baby weight. It's healthy for your baby.