What Woody said.
There is a neighborhood tavern very near my home that was converted from a restaraunt 20 years ago. Since then it's been through at least 6 owners and name changes. Every one of the owners had always dreamed of how great it would be to own a bar, and every one has burned out in a matter of years. The place gets plenty of traffic, and does good business, but the dream is muddied by the reality of what it takes to run a bar. Over the last two decades, the bar has run the gamut of types; it's been a biker bar, a music bar, a gay bar, a sports bar, and is now operasting chiefly as a Nascar bar. It's a great place that's close to home, and regulars from all the former iterations still frequent it. On any given night you can see bikers sitting next to gays and race fans, sports fans and music lovers. The lady (term used loosely) that runs it keeps pretty tight reins on the crowd, and everyone gets along (most of the time). To call the pace eclectic would be an understatement.
Problem is that along with the joy of making people happy with good drink while making money is that there are problems like any other business. With a place that sells alcohol, there are many difficult situations that arise; it's the nature of the beast. You might need a bouncer. You will have to adhere to sometimes dumbass laws. You wil be expected to cater to people that are less than kind to the help.
Speaking of the help.. finding a really truly good bartender is harder than you think, and without them, your bar is doomed. When you find them, treat them like fine pearls, and pay them enough that they won't dip into the till.
These are observations from the other side of the bar, but I've witnessed what's in the belly of the beast, and it ain't as pretty as it seems.
Having said all that, I think you should go ahead and do it. Running your own business is very enlightening, and will teach you things you could never learn elsewhere.