Your golf glove is like a second skin on the golf course. The glove protects you from the elements, and keeps your hand dry for a proper grip. When you get a hole in your glove, it may cause you to get blistered skin or lose a good grip.
Holes in golf gloves often come from wear and tear. Over time, the friction from the club will make the glove to wear. Rain, sun exposure or general neglect can increase wear. As the materials thin, the glove can form a hole.
Gripping your glove too tightly may cause abrasion from the club, which will wear away the soft leather of the glove. This results in the glove pulling, scratching and possibly tearing. If the golfer's grip is consistent, he will continue to apply pressure to the same spots repeatedly. That's where holes are likely to form.
A poor grip can contribute to a hole in a glove. The glove manufacturer may recommend where to hold the glove, and if you don't follow the advice, it may start to wear. For example, if you hold your club with your palm, and the instructions tell you to hold the golf glove across the heel pad below your fingers, the palm may become worn because it's not as durable as the heel pad. Also, if the glove doesn't fit properly, and the fingers are too long for the glove, that can cause pressure and create a hole.