Some people believe that removing their pubic hair increases genital sensation during $e-x. Indeed, studies suggest that there’s a link between pubic hair removal and self-reported $e-xual functioning.
However, one doesn’t necessarily cause the other. There are likely other factors involved.
For instance, people who remove their pubic hair are more likely to be young, so it would make sense that they also report increased $e-xual functioning.
More research needs to be done to understand the link between pubic hair removal and $e-xual sensation.