Basically, if the GDP of Africa grows, that could only imply one thing; African citizens have more purchasing power or money. Obviously, if people have more money, then they could be refer to as rich. Similarly, if they have enough purchasing power, or let's say their capability to purchase goods and services on their country shows increment, then they are contributing to the growth of the GDP on the place where they are in. So in other words, a growth in GDP could make a citizen of a particular country, whose GDP has shown an increment, have a quality and a better life.
In order for people in Africa to have an improved quality of life, there must be more money in each African person's pocket, which can only happen over the long term if the GDP is increased. The African people must increase their own domestic product in order to not need to take hand outs and to be self sufficient on their own.
In this global economy of ours, the countries in Africa are not holding their own for various reasons, most of them having to do with being exploited by other western countries. So to have a better quality of life they are going to have to be encouraged to grow their GDP.
I believe the GDP must grow in African nations in order for Africans to have a better quality of life. This is, at minimum at least the easiest way for them to obtain a better quality of life. I believe quality of life is very subjective however, small changes could make a big difference for them, something Americans can't really relate to.
Yes, I believe that the GDP must grow in African nations in order for Africans to have a better quality of life, because Africa needs to improve from the ground up. If we continue to just send them aid, they will eat for a day. We need to help them improve their system as a whole.