T.C.
Yep, my son is going through this now also. Every once in a while he will chose to sit in his booster but most of the time he wants to be like the rest of us in a chair. It does create more mess, but he eats great & doesn't get down. Even in resteraunts he refuses the booster seat now. I think it's important to let them express their independence a little and I believe in chosing my battles. If he wants to feel like a big boy & sit in the chair, go for it! If he wants to not hold my hand in the street, well that is when I will put my foot down.
My son also refuses to use his toddler silverwear. He tells me no & ask's for a "daddy spoon". I think he is just wanting to be like the rest of the family.