I have never worn snake boots, but you all make me think about it. I try to be aware of my surroundings and be cautious, but it can still happen. We don't have a serious snake problem here. A few copper heads and timber rattlers are very rare.
My niece's daughter was bitten by a rattler in Utah a couple years ago while hiking. She was only 6-8 years old and spent several days hospitalized and thousands of dollars in antivenom cost. Miraculously she has no lasting problems, only a couple dark spots where the fangs penetrated.