I wonder if this all applies if you are only feeding a couple of times a day which a lot of women seem to do in the second year (i.e.not on demand).
Although I am breastfeeding still at 21 months I do somehow feel that I'm not a real breastfeeder IYSWIM for the following reasons:
I have found that I can now be away from ds for 2-3 days but he will still bfeed when I am back.
I never get any symptoms of feeling full etc.
My supply seems pretty robust (though not very copius obviously) so I don't particularly feel tied by it , hence my feeling is if I am not tied down by it I can't be actually breastfeeding (weird or what!!). On the nights I'm not there ds just takes a cup of milk off dh instead and is apparantly not that bothered.
I never feed outdoors. I have recently tried this again as ds was so insistent and had to stop as DS insisted on sipping for 30 seconds and then tweaking my nipple, running away, latching on again for another 30 secs etc.. - so I won't be doing that again .
Also ds often asks for milk in a cup - drinks that than asks for num num, so I don't really see breastmilk and cows milk as mutually exclusive, he seems to do both now, though until about 14 months old he wouldn't drink cows milk at all.
He will also often breastfeed while holding a cup of milk or water and alternate between sipping the cup and breastfeeding.
Finally - I really pretty much loathe the whole experience of breastfeeding and always have. I spend a lot of feeds with toes curled through the entire thing from the pain. I also find the whole experience more like a wrestling match than a calm, peaceful one.
Why do I do it? - Well that is a good question - I'm not sure other than on the very rare occasions that bfeeding is not painful I do see what people mean about how lovely it is, also even when it hurts ds seems to like it so much I find it hard to think of stopping completely.