Been ruminating on this question myself for a while, and I think I have several of my own reasons, a lot of them being personal connections.
They're one of the most misunderstood creatures on Earth, and as someone who spent a lot of their childhood as something of an outcast that resonates with me. They also tolerate interaction at best rather than seek it out and are more than happy to be left alone; they're all introverts like me. We both like to eat a lot in one sitting and rest/sleep it off too.
On the more practical side, they're a dream to keep. Don't eat too often compared to most pets out there, they do well with handling but they don't require it at the same time, and they're just simply beautiful.
Interested to hear what answers you all have.