A few random thoughts on scarcity of evidence, especially for the bigfoot fans and critics not living in North America. The scale of things are difficult to appreciate if you have not been in NA wilderness. I've thrown in some comparisons to UK for those lucky enough to live there. Sources are government or other public websites.
Forest size considerations in sasquatch hiding effectively
3,800,000 US size square miles
1,300,000 US total forest square miles (36% of US size)
294,000 US National forest square miles
94,000 UK size square miles
156,000 California size square miles
8.3 equivalent in number of Californias (1300K/156K)
13.8 equivalent in number of UKs (1300K/94K)
Human population density: UK vs US:
US pop. density: 36 per sq. kilometer
UK pop. density: 275 per sq. kilometer
US is 13% as dense as the UK; the UK is 750% (7.5 times) as dense as the US
Bones in the wilderness
I have spent over my life as much as 8000 hours in the US wilderness forests, mountains, and deserts. It is my favorite activity in the world. I have been in places with no trails, not even game trails, and have forced myself through dense scrub while tracing over some miles whatever I am interested in. In most of those places, I have not run into other people as they mostly stay on the paths and trails. I stay away during hunting seasons
as I have been shot at.
Bears and bones in the woods: In all that time, I have seen black bears four times: three in Arizona high country and once in Indiana, where it officially is extirpated and does not exist (maybe this was an escaped pet). I have only rarely run across bones of wild animals. This excludes the caches of poached deer and elk which are usually found within a few hundred feet of a road. The non-poached animal bones are few and far between. I do have a beautiful, five point skull of a coues deer I pulled from a complete skeleton I found under a bush in the Sonoran desert. I have found a few other skulls as well, but rarely. Nature’s clean up crew is effective at getting rid of skeletons quickly.