Agreed. Amazed, yes, but not particularly envious. Indoor stuff up to 1 hr 30 min, is ok (kind a), but once it gets into 2 hours it becomes, literally, a pain in the butt and I do not really believe in their benefits. So much of long distance is more than just pushing the pedals and that mental aspect is not attainable, for me, indoors.
Sorry to hear about that bad experience in the heat and string of 200’s. I ran into heat issues a couple of years ago on a 600. Ended up with urinary tract infections and whatever else could be mixed in. That’s when I dumped the rubberized Brooks saddle (Cambrium). Give me spongy leather any day in those conditions.