I'm guessing that all of the people on here wanting the DG reduced in points have tried and failed to kick them on many occasions!
Last season I had no match to referee, so had a run-out for my old club's 3rd XV. We lost the game 41-20, hardly a surprise as the 3rd's hadn't even scored a try in their previous games that season, but I (ex-first team prop, still 18 and half stone at the time!!) was playing outside half!
There was no way on this planet that the opposition expected me to drop back into the pocket, especially not when the pocket was the 10m line (OK, I admit I though it was the 22 when the idea of a DG sprung to mind!). 3 points later, I was picking the oppo flanker, who had collapsed in fits of giggles when he saw me take the shot, and was wondering why we were off to the half-way for a re-start!
Keep them, they are a part of our glorious game - reduce the points makes it yet closer to rugby league (no offence meant to our RL colleagues, but its just a different sport!)