Would you feel uncomfortable or even offended by seeing a woman breastfeed her baby?
Women are not going to be upset by this, but for the sake of males who might feel uncomfortable, any woman breastfeeding in public should have some means of covering up — e.g. a shawl strategically placed so that nobody has to wonder where to put his eyes. You say that there are plenty of other places to look, but sometimes it is more difficult than one would suppose to look away entirely. It is a matter of good manners to breastfeed unobtrusively.