Hope and purpose in this world is living as best as you can and maybe having life that gives back. But simply giving back isn't purpose; it's a branch of purpose, but it is not the trunk or root of the tree.
It's enough to indulge and to be selfish but true happiness is really when you start giving back.
Those who devote their lives to serving our country, children, and neighborhoods are giving back. They have answered the call to serve.
Giving back involves a certain amount of giving up.
I like being successful. Giving back is just a part of that.