I wholeheartedly agree with Cal physicist Richard Muller’s optimistic and informed answer to this question.
“Global warming does not threaten humans with extermination,” he writes. “In the history of the world, I would say now is the best time to be born. The problem of global warming is minuscule to the dangers faced by my parents when then had me (i.e. world wars, more tyrants, worse civil rights for minorities and women, more violence, poorer health, less economic wealth). We will handle global warming through mitigation and adaptation. Don’t deny your future children their opportunity to enter this wonderful world.”
I don’t think Muller, I, or any other optimists are delusional in that outlook. After all, history is on our side—humans are survivors, tinkerers, and self-improvers.
Statistically we’re collectively better off now than ever before. Read and try to refute this if you don’t believe me. There’s no looming threat suggesting others—only unfounded human fear, old age, or alarmists rooted in emotion (or self interest) rather than fact.