If the Eastside is more desirable then why does everybody go over to the Westside to swim? Remember that horrible smell on the Eastside of the island (not sure if still smells)? The Westside is not the lagoon side, it is the bay side and that is where "Not so secret beach is" and is packed everyday.
You have more businesses and houses being built up there as you have beautiful sunsets land is affordable and no seagrass. It is correct that you don't see the reef from the other side lol, but you really don't see the reef on the Eastside. You only see the waves crash off it, unless you swim/kayak out to the reef. The fish are bigger on the eastside compared to the westside.
It is not so much what side is better it is more what are you looking for? Do you want to relax and it be quiet most of the time or do you want noise and amenities etc. Which ever one you say yes to that should be what side you want lol.
No matter what, you are going to choose what best suits what you are looking for. I am the type of person who would live in a cabin with no electricity in the middle of nowhere.