Look, I tried on multiple occasions but I could not wrap my head around how to even build a basic rocket, let alone operate one well enough to get anywhere you want to get. The complexity is high, but I appreciate that if you do have a handle on it you can do amazing things. It's really cool how realistic the space mechanics are for those who manage to grapple with the UI and systems and are able to put things into space, get them places and bring them home, but it's all just beyond me.