We were given a good taste in small, corporeal things so that when we grow up, we will know how to keep spiritual, important things.
We see a small child playing with a game his parents bought for him. As long as he enjoys it, he plays with it. Afterward, the child throws it, breaks it, or deliberately or accidentally loses it.” When his father yells at him, “I spent a lot of money on these toys, why do you break, or throw, or deliberately or accidentally lose them?” The child does not even understand what his father is saying.
When he grows up a little, he begins to understand but still cannot control himself and keeps things he does not need. Rather, he is compelled to break them because he is already accustomed since childhood to break anything that is not needed right away.
Then, when he grows some more, he acquires the control power to keep things in his home even when he does not find an immediate need for them. Finally, he comes to understand that even when he is no longer interested in these things, there is still no need to break them. Instead, they can be useful for small children. In other words, these things will serve people who have less knowledge than his.
Were it not for these exercises, even a grownup would do so. For example, when he does not need his jacket, he would tear it. But from experience, he knows that this jacket can be useful to a person who is less affluent than him, so he sells it or gives it for free to a poor man, but he certainly does not tear it.
From this we understand that in order for man to be able to keep the spirituality and internality that are clothed in the Torah, he must go through all of the above exercises on corporeal things. When he completes them, it will be possible to give him spirituality, as well.
This is implied in “One does not sin unless a spirit of folly has entered him,” and our sages say, “Who is a fool? He who loses what he is given.”