Nursing my daughter until age 7?

It's hard to imagine one day Azalea won't be nursing anymore.  She's been stuck on me from the day she was born and shows no signs of weaning just yet. I know some kids don't wean until 7 and I wonder if I'd nurse her for THAT long if she wanted.  I'm still undecided on that.. as much as Id want her to nurse for as long as she'd like, it will be a little weird nursing someone close to my same height... (since I didn't grow THAT much after age 8... LOL... I'm only 4'10")  oh man, the image of that made me laugh!