Call it laziness, sloth, ineptitude, idleness, or whatever
you like but the idea of doing nothing when things need doing is often
considered to be a sign of weakness or shirking. Sometimes laziness happens
when you don't want to face something, like a boring chore or a difficult
confrontation with someone. Other times, it might be because you feel
overwhelmed and think the task needs a whole team rather than just you. And
then there are those times where you really just can't be bothered. In any
case. it's simply not a desirable trait.
