I meant can’t. You can’t group so many people into such simple traits. Which, actually is why I disagree but kind of do agree with @RJulia08. You don’t need passion to be a Marine, but if you want to last for more than 4 years, it’s going to have to be a decision you are glad you made. Don’t get in because there isn’t anything better to do. You’ll hate yourself for it. I haven’t talked to many Marines that have been overseas, but from what I hear, Iraq is not exciting, we’re pulling out of Afghanistan, and your MOS is likely to be boring as shit, plus you get to play janitor and crap too (typically the low-ranking guys do all the grunt-work). Sure, you’re getting free housing, but you still aren’t bring home much.
You could take a few college classes. Get your feet wet, go from there. I did that. I have 60 credit hours now, and I still don’t know what direction to go into, only because I ended up enjoying so much (then again, I’ll probably continue to take classes even after I get my bachelor’s).
You’ll have to look into it, but if you’re sure you’re going to make it through boot camp, and that you won’t terribly regret your decision during the first four years, you could go for it. You’ll meet many different people, possibly from several different backgrounds, and they may pay for schooling. I hear its changing, so don’t quote me.
By the way, Marine barracks is a sucky place to live. One complaint I hear often is that they just want to cook something, not go out, or go to the chow hall, but cook something of their own. The base I’m at doesn’t have ovens/stoves in the barracks. You get a microwave. And if you get stuck working nights somewhere, good luck finding something worth eating, since many places will be closed, and you likely still won’t have a stove/oven.
But, don’t let me talk you out of it. Just, once you get in, if you’re doing it just because, you’ll be kicking yourself.