I agree with you OP. I can't fathom why cot sleeping is the norm when it seems like it requires so much effort. Yet people seem to assume that having the baby sleep independently will allow them to have the most sleep.
I don't want this to come across as criticism of individuals, BTW, because I really couldn't care less what a particular person chooses to do to get sleep - if you're happy and it's working then go for it! I am interested more in the sociological angle, why it's considered the "ideal" for a parent to be able to put their baby in their cot, awake, walk away and the baby fall asleep by themselves (crying or not seems irrelevant in the "ideal" view, I suppose not crying is probably more ideal though) and sleep through the night at the earliest possible age.
To me it seems really roundabout. Small babies wake in the night, they all do. You're likely to get more sleep by trying to make sure that the night feeds/night time parenting is as un-disruptive to everyone as possible, than by having to get up, possibly even go into another room, feed them while trying to stay awake, make sure they don't fall asleep while feeding, try to persuade them to go to sleep without any kind of external help at all, go back to bed, repeat in 2-4 hours' time!
From what I can gather the overall goal seems to be to get them sleeping through which means that you can go to bed, stay asleep for the whole night and wake up in the morning refreshed, and that the intense getting up in the night only lasts a few months. Which would be great, if it was guaranteed to work - the problem is that it's not! And you can minimise the disruption in the first place and then it doesn't really make a difference how long it happens for.
Maybe personal choice but I loved feeding my baby to sleep and cuddling up to him at night and seeing his little gummy smile in the morning (to whoever else said this - yes!). He's 5 now and it makes no difference at all. In fact we now have the "holy grail" of being able to kiss goodnight, turn out the light and leave
It just happened when he was ready to drop all of the other stuff and it was no trouble at all. I think it's really sad that this is seen as bad or "lazy parenting".