I was bit by something some years back. Developed a good sized welt on my back and a black bruise like ring around it, about the size of a tennis ball, but it went away. Took about a week. But for the most part, they are merely a nuisance, not really a serious threat.
If the foggers are not all that effective, and it is just our imagination making us think there are fewer of them since we bombed the house, then maybe we need to consider the alternatives you have pointed out. It could just be the simple fact that we do now, and have for some time, kept the house much cleaner than the previous occupants, and not the foggers that are responsible for the apparent decline in their numbers.
So, I will take your advice seriously and maybe just forego the bombs for now, and if the spiders start growing in frequency, try to find someone in pest control with experience in getting rid of them.
And you all are right. They do tend to shy away from you.
Regards