> and potentially enable further, more interesting missions.

The further we go as humans is Mars, and it's useless. The next star is so, so, so far away that even considering reaching it with "something" requires a revolution in fundamental physics. No need to build rockets for that, just a whiteboard and physicists, I guess.

And saying that we go to Mars is extremely generous. The engineering of the rocket going there is fun, but if you want to send humans there, they have to survive the trip. Including, for instance, eating and drinking and breathing air for the duration of the trip. Those are not solved problems. Chances are that we as a society collapse long before we get to send humans to Mars.