Back in 1986 when I started cycling I did not pay much attention to "cycling shorts."
I just wore jean shorts or athletic shorts for 20 to 30 mile rides to the beach/back.
Nowadays, I cannot imagine not wearing some type of chamois short because of comfort, chafing and hygiene.
I have been wearing MTB shorts over road bibs lately and I like the added pockets and warmth on cooler mornings. In fact, I will likely wear that combo rather than tights this winter.