>>963I don't think so. It would revolutionise every science and every field of study.
Lets pretend they are have a civilization like us. That's a whole new world for us to explore, literally. People can learn all about their history, culture, the wars they fought, their armies, their anime etc. Even if they don't but just have life that still means there is a a whole world of flora and fauna to explore. And an interesting part of all this is that it can help us better understand life on our own planet, if we found a planet that had life that was similar to dinosaurs then we could use theses animals to fill in the gaps of our knowledge of our own dinosaurs in the same way anthropologists can use the anthropological record to fill in gaps(and that record it self might be greatly expanded if we came across a primitive human like society).
But yes, if it did have primitive life and we colonised it instead then to most people it would just be the same old earth days but on another planet after a while but that would take time. First a lot of research would be getting done and out posts established, there would be a lot of romanticism surrounding the idea of travelling to new and empty world and starting anew.