Pros: Reliability, great optics, interchangeable modular design for lenses, bodied, film backs, and view finders.
Cons: Accessories are now available mostly on used market.
Now that the digital age has hit, an all-manual camera seems to be something of a dinosaur--but not this one. Rugged, reliable, with incredible optics. I have owened and used small, medium, and large format cameras over the last 50 years and this is, among all of them, a gem.
If you don't mind working with an all-manual camera, this is for you. I should also note that this camera is now frequently on the used market in excellent shape and at reasonable prices. It may be discontinued altogether one of these days. Buy a used one and keep it maintained and it will give you =years and years of good use.