It requires time and I am always overscheduled
My code is rock solid! I do not need unit tests.
Myths by their very nature are false assumptions. These assumptions lead to a vicious cycle as follows -
Truth is
Unit testing increase the speed of development.
Programmers think that integration testing will catch all errors and do not unit test. Once units are integrated, very simple errors which could have very easily found and fixed in unit tested take very long time to be traced and fixed.