system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 why were sending another rover to Mars in 2020 instead of risking a mission to Titan? What new, groundbreaking discoveries can be gleaned from Martian blueberries and rocks that are so much more interesting than (let's just say) the possibility of some sort of life in Titan's lakes?

Is the environment there so much more difficult to handle or why is this no priority? Just curious. :)
gpt
As pointed out, Titan would possibly difficult to land on and much harder to get to. It also may not be the right time, as long as we rely on the "slingshot" method to get craft to other planets and moons. Using Mars or Jupiter for a gravity boost would do no good if Saturn and Titan were nowhere near where that ship is going to wind up in however many years it takes.

There's another reason to send another rover to Mars, though, and that's to build on what we've learned. It goes something like "We think that thing A may be evidence of past life on Mars, but it could just be a natural phenomenon caused by B. We can't tell that with instruments X and Y on the current rover, so we need to send up instrument Z to be absolutely certain."