Gotta say, UB, your logic is slightly off, although I have no problem eating grilled anything
Cancer usually takes a long time to develop, and until about 100 years ago, the average life expectancy of humans was around 45 years old. So earlier humans, whose life expectancy was even shorter, died of other causes (disease, infected wounds, wild animals, etc.) before they lived long enough to develop cancer.
To the topic of the thread, ingesting anything, even water, in large enough quantities is not healthy, so eat, drink and be merry, in moderation