>Space is so big that it’s nearly pointless to travel for place A to place B because place B likely won’t have anything place A won’t, especially if we are talking on a solar system scale, so traveling to another solar system is nearly pointless.

What the heck are you talking about? We're not talking about humans making nearly-identical colonies with the same chain stores like Starbucks; different planets are going to look radically different, especially if we find planets with life, as it's quite possible life will look radically different on other planets where it evolved differently.