Before I was in this industry most other things aren't ritualistic in their delivery. In retail, in healthcare, in hospitality, in television - it was very much quality/event driven. A thing was done it can't continuously improved upon. Software (at least relative to me) is like working on a dish as a chef that is never complete. A patient that never is healed etc. It's because so much about ritualistic definition of the task over and over. In mission critical scenarios I do feel waterfall is better. Agile is something where a small team can actually make something over time, lots of time but it's become a thing where meetings (and their number) are measured as part of the success of a project. Not the actual delivery.