Where do you draw the line in a marriage?

I made the mistake of rushing to get married. I mean, left for the courthouse and didnt tell anyone. Im only 22 and my husband is 24. My family was very upset. 6 months down the road, and all I can think about is getting a divorce and starting over with a new guy, the RIGHT way. My husband is irresponsible, bad with money, drinks excessively and doesnt care about me until he needs my support to get him out of a rough patch. I havent moved in with him yet (he's in the military) or even changed my last name because of all these things. I have met lots of really mature, stand up men and all I can think is how much happier I would be with them?