Your reasons are yours alone and if it seems worth it to you then certainly pursue the program. YOLO.
However I don't think the reasoning that students at the bschool and the law school take on loads of debt, therefore it must be OK for YOU to and other HGSE students to take on debt makes much sense. Remember that those students are for the most part pursuing jobs in the private sector, while HGSE students want to be public sector education employees. These positions are notoriously low paying. I work with many of them and some barely make 50,000 and are glad to be getting that. On the other hand the median incomes at HBS are $120,000 plus 20K bonus and $155,000 plus bonus at Harvard Law. No one in the education field will approach that even in the 20th year of their career let alone the first year out of school. And if any of these grads decide to jump sectors, most will be able to command higher salaries because they've been high earners over the course of their careers. Just look at the bios of executive directors and COOs etc of ed organizations on linkedin. Many, if not most, come from a private sector background which is highly respected and well compensated. Not to knock public sector jobs at all. I've worked in both the private and public sector, but I try to counsel people to be extremely cautious about the debt they take on in pursuit of a graduate degree because it can be a heavy burden later in life once you decide to start a family and buy a home, etc.