In my later years, I have looked in the mirror each day and found a happy person staring back. Occasionally I wonder why I can be so happy. The answer is that every day of my life I've worked only for myself and for the joy that comes from writing and creating. The image in my mirror is not optimistic, but the result of optimal behavior.
Parenting classes should be mandatory, whether you are adopting or not, and would include an evaluation of your current physical, mental and financial state as well as how ready you are to take on the rigors of parenthood. Our children are our most precious natural resource, and there is absolutely no other way to parent but to put them first.