As far as safety issues, I think attractive women are going to attract attention - some of it pleasing and innocent and other obnoxious and lascivious - regardless of what they are wearing there. Many female surfers have been hit on while in a wetsuit that completely covers you from shoulders to knee or ankle.
This is what I thought when I read the thread as well.
1) An attractive woman in a bikini, naked or wearing jeans and a hoodie is still attractive. An attractive woman may get oggled at and hit on regardless of what she's wearing. In fact, I would argue that certain types of clothing are
more sexy and distracting than just laying everything out naked.
2) Its just a cultural norm. To those men who seem to think it would cause insurance rates to go up: Uhhh no, no it wouldn't. We would quickly get used to it. We would see topless, fat, old, women and look away (just like we do now with fat, old, women in bikinis) and we would see topless, hot, young women and stare (just like we do now with hot, young, women in bikinis). It would change almost nothing. Especially since bikinis hardly cover anything as it is.
3) That second point is of course assuming that
women actually want to go topless. Do they? I dunno, but it would take a generation or two for it to become completely normalized. Currently, even if a woman wants to go topless
and its legal to do so, will she? It takes a very confident person to go against centuries of cultural inertia. But in places where it is normal (aka a nude beach) there's no stigma so its much easier.
4) Finally, where I'm from there are no beaches or outdoor pools. So I hardly ever see topless men, let alone women. The only place where you see the rare topless man is on the jogging paths by the river. And from my understanding, no woman would want to jog without a bra...