Larry Wall said one of the virtues of a programmer was laziness, a really great lazy programmer would set up all the backups needed to make sure they would never have to do all the agonizing work if something went wrong, but just a middling virtuous programmer might be too lazy to set up all those failsafes especially if they were just doing a project for personal reasons, then if things go wrong they can just decide not to do the work needed to recoup things afterwards - because of laziness.