I'm also not nursing a 4 yr old atm, but I have nursed 3 4 yr olds, and I'm sure I will again. LOL
My ds was mutually weaned at 4, my dd weaned at one month shy of 5, and my ds weaned when the new baby came(so, he had a few drinks here and there afterwards, but he was pretty much done), which means he was about 4 months shy of turning 5. I am currently nursing my 3 yr old and my 4.5 months old. I have been nursing for just over 10 years consecutively, and tandeming for most of the last almost 9, including nursing 2 babes through my last pregnancy.
Nursing my kids has been the most amazing gift I have given them(and myself) so far!! I love nursing.

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