The reason that I created NQA is that I wanted to understand how NHibernate did its magic. I was rathered surprised when people started using it to work with NHibernate on a regular basis. I added some schema editing features that people asked for them.

I then turned to greener pastures, ActiveRecord, namely. I recently got into situations where it can't go. (Really weird schemas, etc). After I stopped feeling betrayed (What do you mean, you only read 99% of my mind?) I sat down to code it. That was where NQA was really helpful. I know hbm (the mapping syntax for NHibernate), but it's not a trivial syntax, with many hidden gotchas for the unwary.

I was able to point & click and get the desired schema very quickly. I'm very proud of it. :-)