Ego is the way many people get into A LOT of trouble. Until you have been in a bad situation off shore, you will not know if you are ready to handle it. I think the best thing someone can do is crew for an experienced sailor, sail or power on a couple stints going way out. I am not trying to hold up myself as the example but growing up on the Big Island of Hawaii and spending much of my time in a small fishing village, I was able to go offshore on fishing boats for extended trips. It can get really hairy, and I mean really hairy, really fast. I have been caught in a squall with my wife on a Prindle 19 that power boats could not make headway against that came upon us in a matter of two minutes while we were in the doldrums. After spending most of my life on or in the ocean, I would never say it is a good idea for a novice to throw them self into a potentially life threatening situation with no experience.
People should crew with experienced sailors. It is the best way to learn.
To each their own, I would never suggest to any of my sons to go out and hope for the best.