Warbler said:

here I have to disagree with you, Alexrd. Lets say you buy a lottery ticket for the 10 million dollar jackpot. You had pick 6 numbers that could each be 0 to 99. You had to get all the numbers right and in the right order. You know your ticket has the potential to be the winning ticket. But if it turns out that you ticket is the winner, I'll bet you would be surprised as hell.

Well, but I wouldn't be surprised about my chance to win, otherwise I wouldn't have bought the ticket. I get what you're saying, though.

My point is that even with contraceptive methods, people should be aware that they are fallible and they should accept the outcome in case of failure, before having sex.