We (my siblings and I) had some sort of land hermit crab as pets.
Despite following the care instructions to the letter, my sister's one died within days. Shortly followed by my brothers.
By dumb luck, mine survived for several boring, do nothing, months. Only to latch onto me with its pincers in a steel like grip. Every attempt to remove him ended in excruciating pain - including mommy dearest's much protested attempt at drowning. Once escaping my parents, just sitting quietly for a couple of hours made crabby relax enough for me to whip him off.
There were few tears shed a couple of months later when he died.
To be fair, I was a little sad. Might have been a crap pet but he should never have been a pet in the first place. Domestcated animals (dogs, cats), adaptive animals (rats, goats,) or animals where we can provide an approximation of their natural living environment (rabbits, some lizards & snakes, some rodents, some fish, some birds) then OK. But very many 'crap' pets need highly specialist, knowledgable, experienced 'handlers' - parrots, monkey, F1 to F4 cat hybrids and yes. Crabs.
And some animals should never ever be kept in captivity. Unless you have a safari park. Big cats, Monkey troops, Rhinos.
And some should never ever be captive. Dolphins, Whales.
Those who can recall my previous pet posts know I had a seriously mental Cocker Spaniel as a child which attacked me - I punched it to stop it attacking me. Attacked my grandma, attacked a child my mother looked after and attacked my sister. I still wouldn't say he was crap. He was ill (Rage Syndrome), badly bred and in the wrong home.
But I would say those crabs were utter crap.