I love a rooftop tent on a side-by-side. It extends the use-case for me, as I can off-road all day, hunt, fish, or hike, and then when the sun starts to sink behind the mountains, instead of stopping to set up camp two hours before dark, you just pop the tent, and you're done. Plus, they get you off the cold, hard ground, which makes the following day all the better for whatever activity you enjoy.
It's why I threw a Roofnest onto my Can-Am Maverick X3. It's why I love that Polaris tossed one onto an Xpedition. And it's why I think Can-Am and S3 Powersports need to put out the parts for the Defender HD11 so it can accept a GoFastCamper RTT. Do it, folks!
But while my Roofnest is lovely, the GFC is lightweight and dope, and my Hest mattresses make everything better, you can't exactly sit in them comfortably. You're lying down, which makes taking in the wonder around you slightly difficult.