It's a comfort thing like any other. (special blanket, special toy etc)
Why not let them have it? what's the difference between a child having a suck of a pacifier vs a tddler or even school aged child dragging a special blanky around? I've seen parents allow a child to bring their special thing to school with them, and even seen schools that encourage it.
If a child is really hungry or in pain, then the comfort item will not fix that. There is no chance of a child being malnurished just because they suck on a pacifier- they'll still get hungry and throw that thing right at you if you keep trying to give it to them instead of food!
I had a pacifier, I kept it until I was about 4, my teeth are perfect. Mys siter went off hers earlier- preferred her thumb. Her baby teeth were a bit wonky, her adult teeth are regular.
My yougest siter was still having a suck when she was in school. Her teeth are fine too.
My middle sister used to like rubbing a piece of materoial between two fingers, or toes- that was her comfort thing- she still does it from time to time. I've seen loads of kids do that- why is nobody concered about damage to the childrens finger joints, or bones? Nobody says- "that child will get arthritis"????
The odds of a soft well sucked (have you ever noticed kids prefer a pacifier that's been well "broken in") pacifier causing permanent damage to a childs teeth are negligable.
Yet, people get all upset about it.
Do what works for you and the child. No matter what the comfort thing is, the child will grow oiut of it themselves eventually.
Not many people are bringing binky, blanky or ted on their honeymoon!!!