Well they do help...Nutless is no way for a male to go through life.
So, let me reply by saying, it's funny to see how these millenials keep thinking that THEY are the ones who invented sex: I'm sure the female researchers thought it was quite a trick to get paid for examining men's nuts.
And, since this is July 4, a fitting quote from the musical 1776:
https://www.youtube.com/watch?v=tpo6hA9yv14&t=58
Eunuchs need nuts.