Riding a bike a protection and in general

So we go ride out bikes out in the middle of nowhere. I am not a FOID carry I have not guns but my brother suggest the Bryna? I myself probably would not be taking it on a bike but who knows.
My thought is I live alone and I sleep downstairs on the couch. I sometimes keep the patio door open to let in all the cool night air. I got thinking someone could just drop in although I leave the outside lights one.
But if I had a Bryna I could just take aim and it is about 15 feet away to disable someone. Frankly in my days as a long distance runner with dogs I would have used one at least 3 times in the past. I came upon a dog that attacked me. On a bike in unfamiliar territory it might we worth it certainly if you are touring across country.
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Deacon Mark