Something disposable is not meant to last. It's OK to throw it out after you use it.
Disposable diapers are a good example of what the word disposable is all about: after the diaper is used, it goes straight into the trash, and you can't use it again. Something disposable is replaceable. If a boss decides an employee is disposable, that means the employee will probably be fired. As you can imagine, people don't like to feel disposable. Lots of people don't like products that are disposable either. Disposing of things just creates more garbage, which is bad for the environment. Usually, things that are recyclable are better.
