You also have to consider that you aren't going to make a lot of money unless you can get a full time position. So this requires a second job, i.e. working for a commercial airline. Working both jobs sounds like a great idea, but I'm sure it doesn't leave much time for a life.
Also, most guard units are very top heavy when it comes to rank. This is very good when flying against them because they will sharpen your skills, but I would think it would be hard to relate to them on a personal level.
I've heard that most guard trainees do very well in flight school because they aren't worried about getting the plane they want. They are able to relax and enjoy the experience.
Since the Guard units are funded by the AF, they are usually very nice!! I've heard that Denver has a nice gym and bar reserved for the crews. That would be a bonus, but then again, they still hold that strict atmosphere that they AF tends to breed. Man, AF will take anything that is fun and make it incredible annoying.
After weighing all the pros and cons, I decided to go active duty. It fits my life a little better.
Of course I have no personal experience, just friends. It would be great to hear from anyone who is in the guard/reserve.