[kffcc]

I like to answer your question from my experience.

Your point is valid. Personally I would not join a company, as a software developer for software without tests. I would consider it if they hire me to lead their code improvement efforts, but even then no tests reflect engineering and business culture in that company (which is very hard to change). A big point I like to add is that new developers make more mistakes within a system they don't know. Having a good test suite gives young and experienced developers faster feedback about their assumptions of the system. Also unit tests act like an always up to date documentation which a developer can read to understand important assumptions about the parts of a system.