As others have pointed out - harmless and very beneficial. I used to catch and keep all kinds of snakes as a kid growing up in New Jersey. Most tame down and like to be in contact with human skin - nice hot water bottle. Used to freak out my mother, until she learned they are not 'slimy'. After feeding them and plumping them up, I'd release back where I found them.
Whenever I see snakes, I go out of my way not to harm them.
Now, if I had Western Diamondbacks in my yard......
If you want to gather honey, don't kick over the beehive. - Dale Carnegie