[protoplant]

I wonder about spider bites or something. Imagine sleeping on the forest floor with no covering, ants would crawl on you and stuff. Well, at least at picnics they do. A lot of bugs are nocturnal I think.

[tim333]

Mosquitos, in practice, are one of the main reasons to cover up if sleeping outside.

[soziawa]

It's not like they are small enough to fit between the blanket and you.