Hey Matt,
This is a hard dicision, and I have been there before. Let me give you a little advice. I decided to go on to med school. I finished my BSN, and practiced for a few years. I originally planned on going on to get my masters (NP) but after I had practiced for a while I quickly changed my mind. When you go out to practice as a RN you will most probably be over worked underpaid, and underappreciated by the hosp. You will probably end up with a bad back and knees because of the lack of staff in the units, and when the hosp is finished chewing you up they will spit you out for a cheaper new grad. I became so frustrated while practicing (you can read some of my other postings) that I wanted nothing to do with the nursing profession any longer. You are probably the least respected part of the healthcare team, however you will do the most work. Working in what I would call dangerous conditions because most hospitals have cut back to the bone, and the so called Professional nursing associations do NOTHING to help. So I still longed to futher my education and do more for the patients so I went to med school.
The actual curriculum of the NP program also helped me make my mind up. As you probably know. 90% of the material in nursing school is made up of usless paperwork, and that doubles in most masters programs. All of that nursing theory and research crap. (If you ask me nursing reasearch is just looking up someone elses real research and siteing it) My wife just finished her masters in nursing and is about to take her boards for NP, and I am so glad that I went into medcine.
Now you will hear those hard core nurses and other med students on here say how you should stay in nursing, (for one thing most med students have no idea how hard it is being a nurse, and the nurses feel that you are betraying the profession) but I say follow your heart, and pray about it. Do what you think is right for you. They will say "Oh look at all the time you will spend in Med school" "Oh med school is soooo tough" "You will go into great debt to become a physician" "Oh nursing school is so stressful", Well let me say that you will spend a year or two (you should at least have a years worth of experience before starting your NP program. Some schools will take you without a year but don't do it. I have many friends that have done it without any practical experience and when they finish they say they feel totally unprepared, so as far as time comparisons go you will have a few more years to finish your MD or DO (probably 6-8 years depending on what you want to do),but you have 1-2years to gain experience then 2-3 years in a masters program so you are looking at 4-5 years. My wife's schooling was very expensive so we had to take out loans, and she got her masters in Adult Health and now she is having great trouble finding a job as an NP. So it is up to you. Go out and practice for a while, and then make up your mind. You may find one of those rare legendary good jobs in the nursing profession and you may love it. So just make up your own mind. I am 29 and starting med shcool, and I know people in their late 30's and 40's who started med school. So you have time.
Good Luck,
JK