Are Fuses/Fuse Boxes Obsolete, how long will they still be easily purchased?

I live in a home with a 60+year old original ceramic fuse box, 15 amp original wiring and it works fine but I was told by a friend that new homes can't have fuse boxes and insurance companies force many people to replace fuse boxes with circuit breakers, I know there are a lot of old homes still, but how much... show more I live in a home with a 60+year old original ceramic fuse box, 15 amp original wiring and it works fine but I was told by a friend that new homes can't have fuse boxes and insurance companies force many people to replace fuse boxes with circuit breakers, I know there are a lot of old homes still, but how much longer will it be easy to purchase fuses for your home?
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