I haven't pursued an MBA, but know lots of people that have, including my siblings. All of them seem to have had great experiences with their programs; they learned a lot, met great people, experienced many things during the program that they probably wouldn't experience otherwise, and gotten a broader perspective than they had before.

Many of them have had lucrative career opportunities after their programs and these opportunities probably would not have come by or similar opportunities would come by only much later in their careers. This seems to be a great value of an MBA program, especially one at a top school.