Sex, like speeding, has consequences. Only do it if you are capable and willing to accept responsibility of the outcome. Both can be exhilarating and tremendously enjoyable. If you're careful and smart about it, you can most likely enjoy it and get away with it. But doing so recklessly will end up with unwanted consequences, possibly disaster, sooner or later.
If you walk away with only a ticket, you're either lucky, or doing it wrong 😉
That said, I am in favor of pre marital sex, between two responsible, sensible individuals. I dont think I was mature enough to handle the consequences my first time, as a teenager. I certainly wasn't ready for marriage. I do believe sexual compatibility is important in a marriage, and while a couple can find that compatibility, it's much, much easier to figure out prior to marriage. Especially in the environment we live in now.