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Does pineapple belong on pizza?
Taking a shower in the kitchen sink is also a way of changing one's routine, but it's not necessarily a good idea.
Many families have used the kitchen sink not only as a food preparation area but also as a baby bathing area (in small houses, days gone by).
An individual can determine the merits of an idea based on their own preferences, research, testing and feedback. Nobody is forcing pineapple (or kitchen sink showers) on them.