Is it really worth it to be a writer? The romantic answer is a resounding yes. And if you're the type of person who likes insecurity, criticism, instability and exhaustion, then it's definitely something you ought to pursue. But if you enjoy getting holidays off and want to have some sort of extra time on the weekends, you've got some hard thinking to do.
Being a writer means paying a ton of money in taxes -- much more than you would if you had a "real job" -- and it means working much longer hours than the 9-to-5 guys who get the luxury of being on the clock just 40 hours a week. It also means being disregarded by everyone you know, because they'll assume it's easy for you to be flexible when it comes to your work. After all, to some of them what you do isn't even going to be real work. So before you pursue the goal of working as a full-time writer, make sure it's really worth it to you...because I promise, you're going to have to give up a lot to make it work.