> In 20 years you've never started work on something and after a bit said damn it I think I'll use that library that other guy developed? I can't speak for him

> In 20 years you've never started work on something and after a bit said damn it I think I'll use that library that other guy developed? I can't speak for him and I don't know about you, but while deciding whether I would start to work on something, I'm actually deciding if I'm capable of doing it and looking at all the pieces needed to do it. I'm not starting work until I know I have all the pieces in place. Sometimes I may doubt that some piece is missing or might be hard to do, so I make a very small prototype of that system only (this usually takes a couple of hours tops). Once I make a decision and start working, I never go back. Just like him, I have never regretted doing it myself, but have regretted using another developer's library many times.