Ever seen an electrical device fail in wet conditions? Leave one out in the rain and see what happens. Well that happens in hunting situations. The last day I hunted it was freezing rain. I had an 1/8" of ice on my gun when I quit for the day. A few years ago I was hunting in a downpour. Everything got soaked except my powder. Where I hunt you can never be sure of the weather. Some years it's dry as a bone, while some years you feel like a fish. Last year we got over a foot of snow the day before one of our short seasons. I coudn't even getout of my driveway. When you only get a handful of days to hunt you hunt regardless of the weather. A rainy day is just another hunting day. I have yet to see any electrical device survive after that kind of abuse over an extended period of time. I refuse to use an electrical scope of either a reddot or illuminated reticle style for that very reason.