premature ejaculation is god's way of saying: "I don't want that thing in there when it goes off".
just another way nature prevents particular pregnancies, and no doubt for a good reason, probably relating to either the physical or mental health of the ejaculator.
Hell, I've had more stress than anybody on this planet, and I never had any premature ejaculation stuff, so I don't buy the "stress" argument.
The casue arises from an oversensitivity issue, from to an excess of free nitric oxide receptors. The condition may be corrected in many cases by the person ingesting daily reasonable amounts of raw radish and spinach.