Why is the body compared with clothes?

The 22nd verse of chapter 2 of Bhagavad Gita for happiness begins by Lord Krishna saying that as we change clothes, the soul also changes bodies. Even though many of the modern scientists do not believe the existence of the soul, there are facts about the body that they cannot explain. Lalwani further elaborates that sometimes the soul goes to a human, sometimes animal — and at times, salvation!