It's how the game's best players play. They hit their stock shot 95%+ of the time. If they need to shape their tee shots, many will hit a club other than their driver (Chris DiMarco pointed out in his Playing Lessons on Golf Channel that he can't reliably draw his driver, so if he needs to hit a draw, he hits his 3W).
Very, very few pros curve the ball with any club opposite their normal shape more than 10% of the non-trouble-shot/specialty-shot times (i.e. 13 at Augusta National is a specialty shot).
It goes farther for you because you likely deliver less loft when you hit a draw. I can easily make the case that a pull-fade goes farther than a push-draw. You likely hit something close to a straight-fade and pull-draws.