Hi M.!
Here is what my pediatrician told me when I posed the same question about the pacifier, about potty training and about sippy cups as well. At one point I was doing the same thing as you:
"Your son will not go to Kinderarten wearing a diaper, nor will he be 13 walking around with a pacifier or sippy cup in his mouth. Let nature take it's course and once you relax he is going to drop all of that when he is ready! Why put yourself through the torture, Jill?"
That is one of the the best pieces of advice I ever got! Children are young for such a short period of time - let them be babies/toddlers/children.
Granted, my son only had the pacifier during naps, at night and in the car, as he got older. He wasn't allowed in stores with it as he got older. Eventually he lost interest in it.
Not your fault, of course but why is there a "timeline" to wean all these things, based on some supermom standard? "I have to have my child weaned from a sippy cup by this age, I have to have my child potty trained by that age. Oh - and God forbid my toddler walks around with a pacifier in his mouth." These "crutches" as I've heard them called before are tools used to comfort them. Why put yourself through that?
Think about it: What do you use to comfort yourself? A hot bath? A glass of wine? A good book? If you smoke, would you want someone to pull away your cigarettes? If you have a glass of wine to relax, would you want someone to take that away from you? YOU know your children best. Let the chidren be children and let them figure out when they are done with their comfort items. I'm sure you're doing a great job taking the best care of your children.
By the way, my boys are 6 and 7 now and their teeth are perfectly straight. My oldest had that pacifier till just after age 3, and they both potty trained close to 4, and still have an occasional sippy cup. The world continues to spin... :-)
Good luck to you and best wishes!!