I guess it depends on how much time you want to invest in perfecting the craft, and also what type of photography you'd like to make money at?
Seems like lots of folks are getting themselves a nice digital camera these days and running out trying to make a living with it. I'm sure you'll get loads of different views and opinions here.
I got back in to photography about four years ago as a hobby. NEVER in a million years did I forsee a business coming out of this. But I needed something to occupy myself with an 'empty nest' at home. I teach school and just started shooting local sports and activities for fun. Then I got brave and kicked up a personal website and tinkered with that.
I spent tons and tons of hours learning, playing, practicing and reading. Next thing you know, people started noticing my work and calling me to do team shots for local kids leagues...then weddings, Sr portraits, family portraits...etc. I used the money I made to buy better gear...and now I have a nice little supplemental business that has really payed for itself in numerous ways. Lots of people ask me if I'm going to quit teaching and 'turn pro'. I always laugh and tell them I don't want to 'HAVE' to do this...I'm enjoying myself too much now as is. Maybe someday when I retire from teaching. But just go out and enjoy your craft and get good with it. Those doors of opportunity will open for you in due time.