Does anyone else have know-it-all relatives about how you raise your child?

My sister and her husband seem to think that they know everything about raising children and my husband and I are complete idiots that need to be told what to do. She criticized me using a pacifier, using a binet that had vibrations for soothing, for starting solids "late", and being a stay at home mom. She also made it seem like a bad thing, that we were overprotecting our son because he had normal separation anxiety. She makes it seem like her kids walk on water and our son is behind and we aren't as good as parents as her and her husband. I don't know why she's this way or why it bothers me, but it does.