My field is technical. I was a worker, started the MBA, and transitioned to management as I was finishing the degree.
The university was good but not very prestigious. It was a good fit for my budget and available time.
It was absolutely worth it.
I learned skills related to managing people, negotiating, and basic business accounting. I use these skills almost every day. If I had to learn them "on the job", I would have been off to a very rough start.
I do wish I could have attended a more prestigious school just to have a more impressive resume. However, the education itself was worth it.