We do not have a pool, but my inlaws do. Our kids are over there swimming normally 2-3 times/week during the summer. Their pool is chlorine, & my older DS especially has a hard time w/ his eyes. He loves swimming, but the chlorine does not love his eyes. After swimming in their pool, his eyes are so bloodshot!
This past summer, the condo we staying in while we were visiting St. Augustine had a saltwater pool, & we loved it!
The water is so soft, &, after swimming, the kids' eyes weren't bloodshot & red. The difference was amazing to us!
Since then, DH has researched a little about saltwater pools & has talked to some other people who have saltwater pools. If we ever get a pool (it's on my "wish list"!), it will be saltwater. Saltwater pools are apparently both more inexpensive & easier to maintain than chlorine pools.