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1x is fine for situations where it doesn't matter how long it takes for you to get the the correct gear, or if you even have the correct gear at all to maintain optimal cadence.
I just can't actually think of any situation like that. It's a HUGE step backwards in function.
"Whoops I got to the top of the hill. Just let me shift through my entire cassette before I can accelerate"
"Whoops I hit the bottom of a dip or valley and now I need to start spinning again. Just give me a while to dump my entire cassette..."
"Whoops the pack I'm stuck in has decided on a pace that I don't have the right gear for. I'll just use up my legs for a while..."
"Whoops I'm commuting to work. I guess I'll just shift my rear derailleur six times at EVERY FUCKING STOPLIGHT"
It's legitimately awful. 1x is objectively worse in every way than a friction-shift ten speed.
