Given how relatively unusual "extended" breastfeeding is, isn't it interesting how many of us there are here? I imagine it's more likely to be because parents of gifties tend to be bloody-minded likely to make up their own minds about what works for them regardless of what's usual in society, rather than because extended breastfeeding produces gifted children, but still :-)
Stubbornness definitely happened with me. I was oh so determined to nurse that we survived tons of pain at first, nursing strikes. etc. Now DD's totally addicted and I'm not sure how we're going to stop either. My game plan is go to 2 and see how it goes from there. Also, I *think* I was probably much more willing to do research and ask people for help than many of my other friends who ended up quitting earlier. Honestly, I don't really see 2 as extended nursing since the world average is 4... No real advice but I think we'll be in the same boat when she reaches 2. Good luck!