4) The Recruiting Pipeline: There is a tranche of very desirable jobs out there that are, de facto, restricted to graduates of the top-N (3 or 7 or whatever) MBA programs. Specifically, associate-level roles at consulting firms, i-banks, and management rotational programs at F500 CPG/industrials/FANG. Especially if you're a career changer (I was a military officer pre-MBA), the 2 years of opportunity-cost are often worth the opportunity set provided by the recruiting platform.
With that said, it's important to note that there's no secret MBA knowledge you'll get at any of these programs, nor will you be coated with magical MBA dust that makes life a cakewalk once you graduate.