There are several potential benefits to using a packer, including:

1. Gender expression: Using a packer can help individuals who wish to present as male or to create a more masculine appearance. For trans men, gender non-conforming individuals, and others who may not have a penis, a packer can be an important part of expressing their gender identity to the world.
2. Dysphoria relief: Not having a penis can cause gender dysphoria for some individuals. Using a packer can help create a more realistic appearance and may help reduce feelings of dysphoria.
3. Increased confidence: By using a packer, some individuals report feeling more confident in their gender expression and overall sense of self. This can lead to improved mental health and well-being.
4. Sexual pleasure: Some packers are designed for sexual use and can help individuals who have undergone genital surgery or who may not have a natural penis experience sexual pleasure in a more realistic way.
5. Comfort: Some people find that using a packer is simply more comfortable and natural for them, and can help them feel more at ease in their body.

Ultimately, the benefits of using a packer will depend on the individual and their needs and preferences. However, for many people, using a packer can be an important part of their gender expression and overall well-being.