Jump to "other places." What other places? We can LOOK for other places at 186,000 miles per second - and in all directions. We can travel seeking other places in only 1 direction at 7 miles per second. So that's YOUR plan. To put people in a space ship and send them out looking at 7 miles per second for which the nearest known planet outside our solar system - totally uninhabitable in every way - is over 100,000 years away.
Yeah, that's a rational plan. But, hey, here's another idea. HOW ABOUT FIGURING OUT WHICH DIRECTION TO GO BEFORE HEADING OUT ON A JOURNEY THAT 10,000 generations have live and die in a box before even seeing a planet that is a maybe. And doing that search looking over all our galaxy in all directions, rather than picking one of a billion possible directions for your 10,000 generation price lottery ticket.
10,000 generations for a 1 in 1,000,000,000 long shot.
And if that gamble pays off, it'd only take another 10,000 generations of space travelers for the next travels to it. So, if that 100,000 trillion to 1 odds gamble paid off, in about 500 million years it could possibly benefit people on earth. And dozens to hundreds of years each way for just a communication.
And having Mars rather than the Moon as a "jumping off point" would be like backing your car 1/100,000 of an inch backwards to get a closer starting point for a 2000 mile road trip. And walking for 12 months to carry each suitcase to it. 6 months to take it to the car and 6 months to come back for the next one.
The best "jumping off place" is, of course, earth.
These "plans" are without any comprehension of the distances involved in space and objects that are light-years apart.
Name ONE "scientific opportunity" on Mars that isn't on the moon? Or in orbit around earth?