The number of stressors has multiplied exponentially: traffic, money, success, work/life balance, the economy, the environment, parenting, family conflict, relationships, disease. As the nature of human life has become far more complicated, our ancient stress response hasn't been able to keep up.
Somebody once told me I treated my smart phone like Wilson, the volleyball Tom Hanks turns into a friend when he's stranded on a desert island in that movie 'Castaway.' It's an apt comparison: parenting a toddler occasionally feels like being marooned, and your phone is your only connection to the rest of the world.
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.