why are bathtubs made of ceramic, instead of rubber or something soft?
My guess would be maintenance—cleaning soft surfaces is difficult. Moreover, wet rubber is very slippery so it will have to be textured and that will make it basically impossible to get clean.
It’s certainly worth investing in a non-slip mat for your bathtub / shower.
Actually… why are bathtubs made of ceramic, instead of rubber or something soft? Cost? Durability / ability to handle water?
My guess would be maintenance—cleaning soft surfaces is difficult. Moreover, wet rubber is very slippery so it will have to be textured and that will make it basically impossible to get clean.
An alternative might be removable soft bumpers.