Comment by t43562

The problem with anything you've been doing for 25 years is there's not that much chance that I, or anyone else, will convince you to do it differently. That is true of me too of course.

Nevertheless, I highly recommend having automated tests and running them in the presence of memory profilers etc like valgrind if you're using a compiled memory unsafe language like C or C++.

I would look for another job if I had to work with someone that refused to write them to be honest. It's not that I love tests, but I have had to fix other people's bugs.