as tec said, it is situational. If the score is 2 - 2, 2 outs, men on 1st and 3rd in the bottom of the 9th and Edgar is up, I'd much rather he swing at a hittable pitch than try to draw a walk. Unless it was Griffey Jr hitting behind him, the next batter was not as good a hitter as Edgar, and the odds are better EM gets a hit than anyone else.
If the score is 3 -0 in the bottom of the 9th, 2 outs and 1 man on, by all means walk. we need the baserunners.