- It’s the only moon in the solar system with a thick atmosphere.
- This atmosphere is more similar to Earth’s (especially ancient Earth’s) than any other atmosphere in the solar system.
- Chemistry, baby. Microbes, maybe.
- Labs take too long. Experiments on Titan would be short.
- The terrain is pretty wild.
Check out the link below for more detailed explanations and a neat video.
https://solarsystem.nasa.gov/news/1184/why-is-nasa-sending-dragonfly-to-titan-here-are-five-reasons/