I’m certainly not encouraging us to be obligatory about this and feel that “if we’re going to sin anyway, we might as well make it a good one (see: presumption),” but even if we don’t see ourselves — and probably aren’t — as bad as some of the most evil people who may or may not be in the bad place, we’re still sinners who sin.
Even if we’re bright shining lights for all six out of seven days, that remaining day could be the difference in what happens to us when we die.