Minor quibble: Juno did not go in a straight line from Earth to Jupiter. http://d1jqu7g1y74ds1.cloudfront.net/wp-content/uploads/2011/08/575571main_Juno20110727-3-43_946-710.jpg
Yes, I was aware of that, but even if you reduce the 5 years it took to traverse the distance in half, we will still need 72 generations to survive in a space ship.
I will volunteer for the first generation reproduction, if NASA provides me with a mate of my choice hahaha.
