What is the biggest disadvantage of using a tarp for a shelter during camping?

Using a tarp for shelter during camping indeed has the significant disadvantage of providing little insect protection. Unlike tents, which often come with integrated bug screens, tarps lack this feature and can leave campers vulnerable to insects such as mosquitoes and flies. This issue can lead to discomfort and potential health risks, particularly in areas where insect-borne diseases are a concern.

While weight can vary depending on the materials used, tarps are generally quite lightweight, making the first option less of a disadvantage. Wind resistance can also vary based on how the tarp is pitched and the environment, and while limited space can be a factor based on the size of the tarp, the absence of protection against insects stands out as a more pressing concern for those seeking a comfortable outdoor experience. Thus, the primary disadvantage lies in their ineffective barrier against insects.