Interest in the game of golf is waning because it is very difficult for many and the associated costs are extremely high. By including golf in the Olympics, more people around the world could become interested in the game. The game of golf is helpful to many economies of developing countries.
Sports in the Olympics are supposed to be sports that are enjoyed globally, as the Olympics is a global activity. Golf meets this requirement, given that many famous golfers come from all of the continents (barring Antarctica). Golf tournaments also occur in many countries, meaning that people around the world must like golf.
I think that golf should be removed once more from the roster of Olympic events. It does not attract the same kinds of crowds or excitement that other events, such as swimming or diving, do. This drives down ticket sales and revenue for the host country. As a result, golf is more of a detriment to the Olympics rather than a help.
Golf may be popular in the United States and the UK, but it is not popular enough arround the world for it to be an Olympic sport. There are already enough sports that are only played in the United States and a few other countries and we do not need to add more.