What is the purpose of the worm in tequila and why is it traditionally included in some bottles of the spirit?

The worm in tequila is not traditionally included in bottles of the spirit. This is a misconception. The worm is actually found in some bottles of mezcal, not tequila. The purpose of the worm is mainly for marketing and novelty, as it is believed to enhance the flavor of the drink. However, it is not a traditional or necessary component of mezcal production.