I'm not a total prude, I don't think you have to be married to have sex. But if you do a drug dealing pimp or something don't complain that he's such a horrible guy when you get knocked up. Choices. :-P
100% correct coz you never know, it could happen. Also, never date a guy you cant picture yourself with when you are old and gray, because you never know and have no control over who you fall in love with. Great advice, but damned hard to do.
I agree because even with using birth control it is not a 100% guarantee that you will not get pregnant! Only way to make sure of that is to not have sex, unless obviously the female has had surgery and had her tubes tied/removed and made sure that the surgery was a success!