Customized matches is the biggest draw IMO. You can make a ranked Conquest server with higher ticket counts or an ultra-hardcore server where people take much more damage. As Jay mentioned, you can use a server to learn how to fly without having to worry about ruining a game or upsetting people.
Then, there's the competitive scene where having your own private server to host matches is much easier than trying to find and fill an empty public server before randoms enter.
There's also people who use their servers to boost and get unlocks. I've seen a couple of conquest servers that consist of vehicles going around in a circle capping flags to open unlocks and admins who actively ban anyone who kills other players.
Then, there's the competitive scene where having your own private server to host matches is much easier than trying to find and fill an empty public server before randoms enter.
There's also people who use their servers to boost and get unlocks. I've seen a couple of conquest servers that consist of vehicles going around in a circle capping flags to open unlocks and admins who actively ban anyone who kills other players.
Comment