It commands attention. A lower vocal tone can also help to command attention from your audience. When you speak in a lower pitch, you are more likely to be perceived as confident and authoritative.
It conveys authority and gravitas. A deep voice is often associated with power, authority, and credibility. When you speak with a lower vocal tone, you may be more likely to be perceived as a credible and influential speaker, especially if you are speaking about a serious or complex topic.
It promotes better breathing and vocal health. When you speak with a lower vocal tone, you are more likely to breathe from your diaphragm, which is a more natural and healthier way to breathe. Using the diaphragm to support your voice can help to reduce vocal strain and fatigue.