The extra option is useful only if it changes what you can reasonably choose.

More choices feel like more freedom, and often they are just more to process. An additional option you would never actually select adds nothing except the work of ruling it out, and enough of those turn a simple decision into an afternoon. Usefulness comes from range, not from count.

When you next face a long list, cut it to the ones you would genuinely accept and decide among those. If you are the one offering options to someone, give three real ones rather than nine that mostly overlap.