Is it Wrong?

Is it wrong that my favorite game to play with Elias is the one where I just sit in the chair, while he runs back and forth from the kitchen to the living room bringing different refrigerator magnets in a plastic egg, and all I do is try and guess what letter he picked, and then he puts them into his Lego house and gets another? Or perhaps what is wrong is that I always clean those letters up before any other toys in the hopes that he will want to play it again tomorrow.