And many of these same interests run from April-Oct when the football is on for most of that time too. Most golfers I know play for at least 6-8 months of the year.
There's also lots of other major events all year round (golf & tennis grand slams, 6 nations rugby, rugby league, American Football, Olympic & Commonwealth Games, horse racing to name but some) and no-one seems to think it clashes with the current football fixtures.