Hello, don't worry, you tend to get more balanced opinions on this part of the board anyway.
Firstly, pain while breastfeeding like you describe reading about is rare. And secondly, if you do experience pain, this stage only covers the first few days, sometimes weeks, but once that is over with, it gets easy and comfortable. I have had absolutely no pain while feeding since DS was a couple of weeks old, and he is 18 months now.
What I experienced (and I had a pretty typical experience, I am told) was mild pain for the first 10 seconds of a feed, as DS latched on, this is normal and is just because you are getting used to a new thing. (But "toughening your nipples up" before birth won't help!) Breastfeeding also stimulates contractions like period pains for the first few days, this is all helping your uterus go down though (and I think you would have them anyway, but not sure)
I found that for this pain for the first 10 seconds, if I counted to 10 then it was easily manageable. The feed was comfortable after that.
Bleeding nipples, pain all through a feed, or pain so bad it makes you shout or cry are not normal, but luckily the most common cause by far of this kind of pain/damage is bad latch which can be fixed with support. The most important thing to remember, is if it hurts past the first 10 seconds, seek help - the bad pain and nipple damage is caused by carrying on when something isn't right in the first place.
HTH I was told once by someone that breastfeeding is in general harder than bottlefeeding for the first few weeks, but after that it is infinitely easier - shame you can't bottlefeed for 6 weeks and then switch to breast, hey? Think of it as just laying the foundation for breastfeeding later on, and don't be afraid to ask for help if there is anything you are not sure about.