Fear is the enemy of the shipped. Perfectionism is a drive that keeps us shipping something better and better. Folks are happier that way too since they get to see all the snapshots on the road to perfection, which helps them understand how they too can create perfect things themselves. Plus it gives others the opportunity to be a part of that perfection. Like for instance upgrading a web framework so its password system uses pbkdf2 instead of salted hash. Then someone else comes along and strengthens it with bcrypt. Then another comes along and adds argon2. It's a great story.