Answer:
If you do not have a down payment, then you should reconsider buying a home. Equity provides a cushion against the changes of value in homes--should you end up selling, the money comes back to you. Also, having a down payment may result in your being able to get a lower loan rate, which makes your payments lower. You would not have to pay for mortgage insurance. It just makes financial sense. Twenty percent down is a good rule of thumb.