I agree with this so much that I strongly feel that it should actually be an repos option as it clearly lays out the responsibilities of all parties should they choose to use the code.
Mine will always contain: THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ...
And then maybe we should add something about that people can actually use it if they want to: Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files ...
Should try to start this is an effort for real!
It's also not like it's a lot of work, a 30 seconds one-time investment in my time is less time than I spend on most HN comments.