Please remember that many things that seemed like a joke to people not too long ago are now commonplace. Computers that play chess and beat masters, humans flying in heavier than air machines, and two-way rapid audible conversation from opposite sides of the world all seemed like jokes at one time. But here we are taking those things for granted. So too it might turn out with interstellar space travel and even perhaps in time with the velocity of interstellar communication. Only time will tell.