Boopop
Guru
Part of why I love cycling is its low impact on the world compared to other modes of transport. I want to have as little impact on the planet as possible, within reason. Most of my cycle clothing is new but I've bought used bits, including bib-tights, in the past.I think it's more the thought of it. Unless you are really strapped for cash it seems a bit odd. However if you have no concerns and get a mega bargain carry on.
I'm more concerned about habitat loss, climate change, rising CO2 levels and the like than I am some nebulous and unproven intuition that somehow fabric that has been through a wash cycle is still dirty.
People (presumably) don't have sex while wearing cycle shorts, but they certainly have sex in bed linen. No-one seems squirmish about sleeping in "used" bed linen. It doesn't make much sense to me.