Should I use a pacifier?

My daughter would not take a pacifier until she was 4 months old. I never tried to have her take one but all of a sudden at 4 months she wanted one almost all the time. When she was old enough to hold them good, she would have one in her mouth and she would carry one or two in her hand. I didnt mind though. I think it was just a comfort thing for her. I used the orthodontic pacifiers so they wouldnt mess with her teeth though. I heard that pacifiers arent bad for kids to have either. If a child needs to have something in their mouth and has no pacifier theyre going to go for the thumb. And thumb sucking for a prolonged period of time can mess up teeth because obviously, thumbs have no "give." They're harder than pacifiers. But some kids need neither the pacifier nor the thumb and it is completely up to the parent to decide if they want to try a paci or not.