I'm pretty much in agreement with what everyone has said so far. I was pretty certain I wanted to go for the PhD, but my advisor gave me the advice that he says he gives to everyone, which was to take time off. I started to have some doubts, but after witnessing my mid-life crisis (or quarter-life, perhaps) he encouraged me to apply anyway and see what happened. I've since been accepted into four really good programs and I'm so glad I applied now instead of waiting another year or so or just trying to get a master's first. If I find that it's not for me then I can leave with the MA, but at least I'll have the option. So before I start rambling too much, I agree with the end of your original post. Apply and see what happens--options are always good to have! And good luck!