I say, "Why not?" It totally depends on the guy. At 19, I had a son on the way, had lived on my own off and on since 14, and already had the ethics not to miss a day of work for love or Jesus. I was still what I would call a party animal, but so was my wife, hell, I played in a metal/ punk rock band and played a lot of shows. One thing I was, however, was a man. To the contrary, and I mean no disrespect to those who fit this mold, there are an increasing number of guys nowadays who, even at 20, 21, 22, seem to be interested only in texting little high school girls and playing video games... They have absolutely no work ethic and scrape by working part time at fast food joints taking orders from ambitious 16 year old assistant managers. I'm not sure what caused the big social difference in a few short years, but I'd guess it has something to do with being raised by politically correct affeminate dads who are more in touch with their feelings than their roots. A strong male role model usually breeds a strong male child who will become a "man" at a much younger age. As far as you being older... What difference will that make in 15 or 20 years? If he's the real deal, then that's the real question... Good luck, if you have doubts, there must be a reason... Maybe the question should be, "Is he worth the time invested waiting for him to ripen...?"