Came here to write the same thing, my son was born 6 weeks early, hormonally my wife was not ready to breast feed at all, and we had a hugely painful, and for my wife embarrassing experience sitting hour after hour in the hospital with breast pumps and formula bottles trying to get enough, and the right balance of breast milk and formula into my son. The hospital were adamant that we kept at it, and now some four months in, I think my son has only had to be fed with ~20 bottles, total. Mostly when we're travelling or my wife and I are exhausted, I think it's a natural and important part of raising a child, but not everyone can do it, we were lucky, and we need more tolerance of personal choice or circumstance without being judgemental.
Of course until becoming a parent, I had my strong and largely invalid opinions (i.e breast feeding in public is inappropriate, etc) I'm happy to say I've got past those short sighted and ill conceived views and won't judge anyone for anything they do for their child, probably there's a damned good reason why they're doing it, lack of sleep, exhaustion, and a baby crying are pretty powerful motivators to step outside of one's own personal comfort zone.
Other hot topics (especially as a Brit living in Germany, seeing the cultural differences) are sharing a bed with an infant, bathing with them, skin-on-skin contact, etc, etc.