You have accommodation, business, culture, family, farm, and is very healthy then you would not need to sell. Leave your life and expand your family and enjoy everything nature offers. We can also think another way because not all human have God gifts and others do not exercise theirs in this case we need to provide them with our remnants. Lets truth speaks for itself, people who work on business provide more than they can use allowing them to sell to others. There are those who wants short cut and they are in modern day called pirates, criminals, merchants etc because they can replicate, copy, steal, and take without concern from owners. Need for sale is also so you can have your products in secured finance known to the guiding laws. It is also so you can acquire products from other business to produce, fuse to produce pure quality etc.