In general, garage door openers last anywhere from 10-15 years. One of the key factors in how long your opener lasts depends on the amount of maintenance you provide it. You must lubricate the moving parts in order to increase its lifespan.
Other things that will help your opener last longer is to make sure the door is properly balanced. When the door gets off balance, it can cause additional strain on the opener. The same is true if your rollers wear out and pull on side.
