Until now, I've been a kind of binge-writer - I'll carve out five or six hours on a weekend day and make a large container of espresso and just bang out a lot of words.
Faffing is completely harmless, whereas its opposite - dynamic, purposeful activity - is often very harmful. Faffers do not tend to kill people or make them work 12-hour days or sell them shoddy merchandise or lend them vast sums of money that they cannot pay back.