I bottlefed my daughter because I couldn't get breastfeeding to work as it was so painful, and then with my son I had so much help and support, I managed to breastfeed without any problems (after a few initial hiccups) and loved it. So I will definitely try breastfeeding again, but if it doesn't work, I won't beat myself up about it, either. I do have to say that my daughter has asthma, though, which my son doesn't - of course I can't be sure whether or not that is definitely to do with bottlefeeding her.
I tried your idea with giving expressed milk by bottle, pinkyprincess, but there just wasn't enough of it. My midwife at the time told me that because expressing doesn't stimulate the milk production hormomes in the same way as the baby suckling at the breast, you would have to express religiously every 3 hours, day AND night, to produce enough milk - and somehow that seems a lot more work to me than straightforward breastfeeding.
But be that as it may, I totally agree with all the others that this is a very personal decision to make, and whatever you choose to do in the end, it should be something that you feel happy with without having to feel you need to justify yourself in front of your family or midwife or whoever.
Sorry, this has turned into rather an essay...