Before this descends into some banal online offensive, I urge you to read my post again, in particular the opening paragraph, then practise your skills of 'Close/Interpretive Reading' (or so they called it when I was a lad.)
For my situation, 'Civvies' are very appropriate for the task, sometimes I wish to change, other times it is not necessary. If I wore Lycra then apart from slapping myself whenever I passed a reflective surface, I would need to change every time I reached my destination, and quite possibly shield my face. One needn't wear Lycra to get from A to B, they need only judge the weather, the proposed distance, then the appropriateness of changing facilities available at their destination.
If the advantage you are claiming is that Lycra is the wonderkid of clothing technology - given that it can be used in all weathers - then fair enough, although personally I like to dress appropriately for the elements. However, it would seem that one can still misjudge the weather whilst clad in Lycra.
There are plenty of good quality alternatives to Lycra, and in many cases people probably overdress for a longer ride, the trick is to remember that you can get away with less. For shorter trips say 5 miles and under, proper clothing is more than enough. Then there is the point that on a bike the air is your natural air-conditioner, if you are getting too hot then slow down, if you are pushed for time then count it as a lesson towards better judgement in the future.
For me, Merino wool is far better than Lycra, and the latter is dwarfed by Tweed. A good fitting woollen suit can get one far, and if taken to a tailor / made to measure, then can be made or adjusted for long-term cycling. Then there are plenty of cycle clothes which one can wear normally without coming across as some fetishist.
I for one, like to view my bicycle as a tool for the given purpose, that is why it ought to be comfortable, have a decent range, and a detachable basket for when I go shopping, go to the recycling centre, or make / pick up a delivery. I cycle about 5 - 30 miles in general, and see no need for Lycra.