My personal favorite reason would be people taking their young kids to the Nude Bike Parade, HELLO what’s are these parents thinking?
They are being fashionable. It is hip to do things like this. It is being demonstratively conformist to the customs of a certain group - not the gays, but the upper middle class pseudo-bohemians.
Some of the population of this city is obsessed with fashion and its conformity, as in fact many out-of-towners who bring their kids in for such events.
The vast majority here (and elsewhere in the region) wouldn’t do something so foolish.