I only read the first few replies, but I'll add my info...
My name is K and I'm a first time mom to ds who is about to turn 18 months. I never actually thought I'd be able to breastfeed - my nipples are (were!) very sensitive. But after a bit of a rough start, my son nursed exclusively until he was about 6 months.
Since he turned about a year he's really cut back on the nursing. I think we're maybe pulling back in tandem, because I work nights and if I would be too tired to wake him up when I got home I would wake up totally engorged and uncomfortable. Since I don't nurse him to sleep at night, it's been a nice transition for me to cut back.
At this point he only nurses upon waking. If he wakes during the night he'll just come in bed with us, nurse, go back to sleep, and nurse again when he wakes up in the morning. It's nice, the bonding, without all the added pressure of having to make sure I'm nursing often enough or ending up with mastitis....
I hope with all of my heart that the rest of our nursing goes equally on the same sort of mutually comfortable basis. I know that I can't forsee cutting him off, so to speak. And I hope as long as I'm happy continuing to nurse that it's a nice thing for him too. I'm not ready to quit - it's so sweet!