FOUR years old and still sucking on a binkie. Can we say, issues? That is not normal. No way. The pediatricians will tell you to take the bottle away at 1 year old. I have done this successfully twice. Of course I still suck on a bottle now and then but that is a whole other issue.
Anyway, in a perfect world you are supposed to wean a baby of the bottle at about 1 year of age... the pacifier needs to go as soon as they have enough teeth to chew through the thing. The fact that Suri still needs the "comfort" of a binkie shrieks definite issues going on there. Sad. Really sad.