Apart form being a pleasant past-time and a challenging sport sailing is also a great way of exploring new places And it’s probably the most fun you can have sitting on your backside.
Even if you are not especially interested in racing and winning and all that goes with it, racing is still a great way to practice an improve your skills. When two boats are practically identical you can with the others and try to imitate what the faster boats are doing while avoiding the mistakes of the slower boats and so become a better sailor.
The better a sailor you are the more you will enjoy cruising or simply pottering about. You can get to your destination sooner and enjoy the pleasure of just doing something well.