I'm an avid golfer. As someone who is constantly connected to the Internet I value the opportunity to get offline, back to nature, and spend quality time with my friends.
Unfortunately it is hard to make that kind of time available. Further I tend to be a fast player. I like the rhythm of walking, and find waiting a massive disruption to my ability to play well.
Time is also one of the most scarce resources in our society. Few people have the time required to play golf, let alone play it well. The game requires a kind of muscle memory that takes long to acquire, and takes a lot of effort, i.e. time, to maintain.
Pace of play is therefore a huge and growing concern for the game of golf as a whole, and the golf industry in particular. A five hour round of golf is unacceptable, and I personally find four hours to be too long. Yet there are some resorts and courses where rounds are regularly longer then five, which is just ridiculous.