Did you paint in oil or latex, the reason is oil and grease gets imbedded in paint and can and does make failure of cabinets. Kitchens are in the harshest invironments if you cook, the residues litteraly embed themselves in paint making real degreasing and cleaning sometimes impossible with latex since the chemicals needed will eat the latex up. So I have no idea of how they have been maintained by you, use a white rag , if you clean any residue off you have a major clean job to do, around the handles if where hand oils will realy hurt and be sometimes impossible to remove. 2 years is not much, but often 10yr plus finishes must be stripped only because hand oils have made new finish bonding impossible. So its realy up to their condition , your cooking and their cleaning.