No, not forever. I bought a new pair of nail clippers when I first moved out to college in the summer of 2001. Recently, the hook that holds the top part in place wore away so much that I couldn't keep the top part from falling off every time I used the clippers. I bought a new one and threw that one away. So nail clippers can last about seven years, but then the hook that holds the top part might wear out. If that happens, just get a new one and throw the old one away.