It;s Possible
but very, very tough. I am not a pro but a serious recreational player. There are a few pros on here who can tell you what it's really like but some of the downsides would be travel (and being away from family, if applicable), expenses, pressure (from the casino and knowing you need to support yourself and/or your family, healthcare (unless your spouse has insurance), loneliness, finding and playing a winning game (and then actually winning), and many more too numerous to name. The movie 21 was not realisdtic.