I have a duro and a tough solar. I have worn the tough solar every single day since 2018 and have never had am issue. I've had people comment on how nice the duro looks.
For my money, you can not go wrong with Casio. Indestructible. Classic. Jeans and a T-shirt. Can't go wrong.

As everyone else here has stated. Be responsible with it. It IS inherently more dangerous, but you can limit your exposure. Seriously...ride like you're invisible to cars. In my opinion, most (not all) motorbike accidents are preventable and are largely caused by the rider going too fast for their skill level or not paying attention to their surroundings.

I am ignorant about this, but have had thoughts about taking it up. Why would it be illegal?

I remember reading something ( I have no source...please don't kill me..) that said that the chemicals in sunscreen also can cause cancer, but again, It's probably the "banana equivalent dose" (thanks for the new term @postscarce ).