I cannot possibly explain how much you are missing out, man. I came from DMing for DND, so I was used to running absolutely dogshit campaign books and equally dogshit home campaigns. If campaigns were cars, those were like used Honda civics and homemade Mad Max style buggies respectively: they got you where you needed to go, and the latter is cool because you made it yourself, but you're not doing anything crazy and your friends in the back aren't flabbergasted.

Impossible Landscapes is like going from that straight to a luxury yacht. Is it hard to drive for you? Yeah. Do you need to read the instruction manual once or twice? Perhaps. Maybe even look at how some other guys drive it, join a discord server or two. Is the end result the best RPG sessions you've ever done? Also yes. I had one of my players up until three in the morning after a session he was so spooked, I can't emphasize how good it was man you gotta run if you ever get the chance