John Pavlus, writing back in 2010 when the Lifehacking thing was still really popular: 

[I]t’s just plain easier to tinker and tweak something you assume you’re stuck with, for better or worse, than it is to design something better from scratch. It’s less tiring. It’s less frustrating. It’s less frightening. It takes less commitment. There aren’t any unknown unknowns. The failures are less painful and the successes are more frequent.