Ermmm, I BF'd DD till she was 3 and her dad took her overnight fairly regularly, sometimes for 2 nights. Other times I had to work at night so I couldn't give her a bedtime feed (this was from the age of about 18mo I think) and it didn't bother her at all.

However the first thing she would say when she saw me was BOOBIES!

But that's just me and her I suppose.