Currently, the British Open is in the midst of a Wind Delay.
Why is wind a reason enough to cause a delay at any golf course? Wind is not a dangerous condition like lightning. Heavy rain, I could even see being a reason to cause a delay because it hinders sight, and could be considered a health hazard.
Wind however only affects the flight of the ball, and would do so for everyone on the course at the same time. Being able to watch the pros handle the wind would be a benefit for everyone watching. And if gallery hazard is the concern, then they should be removed from the course.