The primary reason for using a penis extender is to increase the length and girth of the penis. Some men may feel self-conscious about the size of their penis, and using a penis extender can help them feel more confident and comfortable in their sexual relationships.

Penis extenders can also be used to correct penile curvature or to aid in the recovery from Peyronie's disease. In these cases, the traction force applied by the extender can help stretch the connective tissue and reduce the curvature of the penis, resulting in improved sexual function and reduced pain during erections.

Some men may also choose to use penis extenders as a non-invasive alternative to surgery or other medical procedures. While the results of penis extenders are not guaranteed, they can be an effective and low-risk option for men who are interested in penis enlargement. However, it's important to note that penis extenders are not suitable for everyone and should only be used under the guidance of a healthcare professional.