I know this might sound weird but I genuinely believe you draw/attract snakes to you. If every step you take you are thinking/worrying about snakes then you are bound to come across one. I understand that there are most likely snakes all around me when I walk but it does not consume my thinking. The same as when I'm Kayaking, I'm sure there are Sharks all around me but that's not something I worry about or spend all my time thinking about...