I used to live in the desert southwest & was known to rescue & relocate rattlesnakes. One call I went on was for a guy whose sister & her kid had just moved in with-
due to a rough patch in family circumstances- and wanting a pet, the daughter (about 8 years old) was found carrying around a young "Mojave green" rattlesnake.
She didn't want to give it up either but they insisted, and altogether, I picked up 4 rattlesnakes from that property. It was a virtual oasis for snakes of all kinds, with
several woodpiles, nice enclosed skirting under their house trailer, a shed with chickens & scattered grain...all of which attracted rodents which fed snakes living under
the trailer...and fyi, desert woodrats (aka "pack-rats") love to live in woodpiles.
Anyway, as far as venomous snakes "putting up with handling by people", the
young rattlesnake carried about by the girl went the extra mile for being stoic.It could tell she wasn't trying to harm it & just went along for the ride...it's typical.