Easy.
A golfer.
They never have to worry about anyone or anything hitting them. They hit the ball in complete silence and with nobody close to them. They walk around on perfect cut grass.
How much easier does it get?
And throwing darts at birds is hard. It doesn't make it a sport!
I absolutely agree. Golf is barely a sport, the guys are not athletes although a few are pretty good athletes (Tiger obviously). In all other sports yo9u still have to attend practice and that is hard work, Golfers never have to go thru this sort of regiment, they merely go to the range and hit a few buckets. Whew, tought ay? Punters or long snappers can still get their bell rung out there on special teams and also have to endure weeks of practice.
The only thing I'll give a pro golfer is that pressure putting for a victory must be intense.
Mr. J. , training hard eliminates the "Easy" factor, at least that is how I perceived question.