Having lots of girls, having fun and getting ripped can be fun. Like someone said he's 30, marriage isn't a sign of maturity, it's a personal choice. However being 30, sleeping around and focusing on having fun isn't a sign of maturity. It's fine through your twenties, but by late twenties you should be focusing on your future, because just in case you didn't know being "ripped" won't secure you a safe future. If you plan on going to university, student debts have gone from being a maximum of £3000 to £9000 (In England this is) and you won't be able to pay them off by getting loads of girls, and that doesn't even include transport, food or living arrangements.
If you don't go to university, jobs are hard enough to get with a degree, without it will be intense.
It might be fun for a while, and if it makes you happy then go for it, because you only live once. But you want that one life to be enjoyable, and not filled with worry because you're drowning in debts because you spent your studying time banging sluts. I'd suggest that if you really want this crazy lifestyle for a while you should keep it to a few years, not to mention some girls get turned of by ex-players, so it could have a really negative effect on your future.
You really need to think whether the serious consequences are worth a few shags, unhealthy amounts of alcohol and muscles.
I don't really think that few years of fun is worth a worrying and stressful rest of your life.