Appearantly there are statistics on how much Swedes breastfeed. I wouldn't know the exact number or where to find the stats, but I expect the number to be quite high. As breastfeeding is a natural process and as Swedes tend/try to be practical I suppose that would be one of the reasons of the high stats.
An other reason is probably that we're not very shy of showing ourselves nude. I'm sure you've heard of the crazy naked Swedes and the Swedish films (eventhough most of them were not Swedish at all) But when it comes to breastfeeding you'll see women feeding their kids in the most strange places around the city. Especially in cafés and restaurants. Every now and then very old people and rather young women try to get the public opinion going on what a nasty behaviour breastfeeding in public is, but the public opinion is "If you can't stand a naked breast, get out of that café or stop staring, Stupid."
The main reason why we breastfeed is probably that we're basically brainwashed and bullied into doing it. During the pregnancy we are constantly reminded of the benefits of breastfeeding. You will slim faster and your child will benefit from it. I'm sure few mothers find it in them to say "I'd rather bottlefeed my child as I don't care to pass antidotes to my baby, or, I don't care to reduce the risk of developing allergies etc when my child gets older."
Then there's the financial aspect. Bottlefeeding costs a small fortune. Even if your child cannot be breastfed most women will still try feeding them their own milk. (I had to do that with my second kid but was eventually told to give it up after three months as I was not sleeping enough. But I'd do it again should I be in the same situation.)
Finally we're being watched. The nurses will ask for you to show them that the feeding is working prior to letting you leave the hospital. I didn't think of it as being watched, but a friend reminded me of it when she said they drove her nuts asking her to prove it was working. Then, after leaving the hospital, a nurse will come visit you at home after a week or so to check that it is OK. Should there be problems you will get help from specialists (if you *want* to breastfeed that is). I think they asked me if it all worked well every check-up we went to. Can't really remember now as it's been 15 years. Fuck I'm old!