I deworm my dog every few years. Yet I've never dewormed my self. To the pharmacy!

True, which surprisingly in a first world country actually can be an issue. A lot of the people that I see recommending stuff like ivermectin for human use mostly kinda remind me of my great grandmother, who grew up during the depression, when you just had to make due with stuff that probably wasn't the best, but so long as it somewhat worked, they'd use it (even if it absolutely boiled down to placebo effect). The common thread in my mind is basically just that in both cases, they and their families were broke and healthcare wasn't necessarily an option (unless the problem was immediate and completely necessary, like a broken arm or profuse bleeding that was going to require a ton of stitches).