I dread to think of how long its going to take to quarry all that. Weeks? Months?Yeah, Titanium is another element you need in large quantities eventually, but where the ore is rare. And I definitely agree that babysitting a reactor can be less bothersome than mining... However, currently I have an ender quarry set to mine a 1000x1000 area. We'll see what that operation yields. Slower than I'd like since I can't run it at full power with a speed III upgrade yet, but building other stuff while I wait is way more enjoyable than mining. Since I now have a substantial AE2 autocrafting network, I can actually think about aesthetics. It never took me that long to reach this point before.
IT2 is actually pretty interesting in one way: old fashioned "BC"-style quarries are pretty rare. It used to be really common to destroy the landscape with quarries, notwithstanding EIO's dirt swap trick.
In all the time I've played IT2, I don't think I've ever built a single quarry. The closest would be a alternate-dimension quarry I set up once in IT:R, but that was a legitimate proof of concept (an entire world made out of "poor gold ore".)