You got that bass ackwards! I came in AGREEING with JadedJade's post. My position just happens to be diametrically opposed to yours.
As to asking the people who as kids were born into adversity and overcame that circumstance as adults, as long as you also ask the people who did not overcome the same adversity, the ones who are in prisons, mental hospitals, and homeless (not implying that all prisoners, mental patients and homeless were born into adversity or failed to overcome it) if they'd have preferred to never have been born, then you'll at least get a somewhat unbiased sample. Until then, you're just defending your position with supposition.