Hi guys and girls

Just a general question, im looking into buying a 2nd hand Canon 100MM Macro USM lens.

It comes with both caps and a hood. I know most photographer take care of their lens and handle it with care ( so i hope)

Has anyone heard of or had such experience with this lens faulting or braking? Are they prone to breaking? I myself have never heard of this lens braking or if they suffer from a common problem.

Thanks in advance