I think it's the same with a lot of other things, such as backups or proper testing - you wouldn't say backups were a waste because you never used them and you

I think it's the same with a lot of other things, such as backups or proper testing - you wouldn't say backups were a waste because you never used them and you wouldn't say tests were a waste because they always passed! It's also like all the wires I have in boxes and draws at my house. As soon as I throw them out I need them!