yeah you are, cuz the purpose of a wishlist is to store the games you wish you had (hence wish list) in a convenient place so that you don't have to spend the time to memorize them, especially if you have lots of them
you also get notifications if one of the items is on sale so you also don't have to keep track of sales; just check your email and grab the deals when they come
while some people do use it as a "i want other people to spend money on me" list that is not its main purpose