If casual, social nudity were truly mainstream, I think something important would be lost from nudism. There would be advantages and disadvantages - the comfort and convenience, but also issues with hygiene, etc. But some fundamental part of the thrill of being naked would be gone.
The taboo adds a little spice to it, I can't deny. But, that said, I still don't think "getting your kit off" should constitute a crime. An eccentricity, perhaps. But not a severe breach of social etiquette, or a violation of our ethical code.
It should be playful. It can be naughty, but in a toothless kind of way. It needn't be altogether widespread, but you should be able to come across, on occasion, a nude person on the basketball court on a hot summer day. At the pool or beach. In a laundromat or locker room. Without any fanfare. Just a "hmm, would you look at that!" No need for police, or any kind of confrontation.
The world doesn't have to join me. And it can have common sense regulations ("responsible nudity in reasonable contexts"), like in stores and restaurants. I just want it to let me be my weird, wonderful self, in a way that harms nobody (not really), without hassle. What's the big deal, anyway? Life's too short to live in fear, hiding who we truly are.