The end goal of every software development project should be to build it and deploy it. Not every language has a ‘build’ step but in that case I consider running your tests to be part of the build. If you don’t build it you can’t deploy it and if you don’t deploy it what’s the point?
Yesterday Rob Sullivan (@DataChomp); the local data magistrate in town announced he was leaving SQL Server for Postgres and Ruby. I applaud him for this move as it does take a non trivial amount of effort to leave something you have been working with in excess of 10 years for something you have only been looking at for about a year. I know he will do well in whatever environment he choses; because it’s about skill and determination; not about what product or platform you work with. But this isn’t about him and I’m sure he is disappointed about that.