I'm a full time Las Vegas poker player. I mainly play low & mid stakes nl games, plus a few largish tournaments each year.
Its a tough occupation for many. In fact in the past year and half (since internet poker got shut down) I have seen lots of people come & go w/ the same dream.
The town of Las Vegas, behind the bright lights and glimmer, is full of hustlers, dreamers, scammers, broke retiree's, drinkers & drug addicts, runaway girls that turn to the sex industry, and degerate gamblers. Its an understatement to say Vegas is an unstable place. People come & go like no other city I've ever seen. You can meet 50 people who *live* in Vegas, and 45 of them will not have a 702 area code on thier phone.
That said, playing poker for a few months/maybe a year, can be fun. There probably won't be another time in your life where it would as easy as it would be for you now. Keep an open mind and go have fun. Assumming you'll "grow up" and get a real job soemtime in the future, get married and have a family...you can reflect back to the summer you played poker in vegas w/ fond memories. Best wishes sir