There are many reasons for human kind to have a house but the question that Why do we need a house is asked as subjective question in schools with different options like
We need house to protect us from ad weather such as rain, sunlight, storm ,heat , rain, cold, enemies ,bad weather condition and other natural disasters. We also need house to live together with family so that we take rest and live happily.
so in short for question
Why do we need a house?
To protect ourselves from storm, heat, rain, cold, enemies, bad weather condition and other natural disasters.