I think, if you're going to be worried about them or even about just the possibility of having to redo them at a later date (definitely a possibility, they were not really designed to last 50 years) then you'll be happier just having them out.
I really thought at first when they switched to saline implants that the problems I used to see in patients would go away but there can be issues with them too, and this cancer associated with some of the textured ones is scary. Even more scary is just the fact that they don't track these things - they really don't know if that cancer incidence is one in 3,000 or one in 30,000 for instance. The whole medical implant business is a mess and we don't regulate them well. (Take for example the Essure fallopian tube springs as a substitute for getting your tubes ties - what moron thought making them with nickel was a reasonable idea? Don't they know how many women are allergic to nickel - and how many of them don't understand that they are, but just think they get "infections" when they wear cheap earrings?).