Its such a personal thing for families . Depends on so many things, cost, pet age, prognosis, who is the main carer, how any pts decision will impact on any member of the family etc . Im lucky enough to never have been strapped enough that Ive had to turn down available treatment for our pets ,and have spent shedloads in the past . However, high on my list is suffering. I wouldnt put old animals through operations or procedures that meant they had to go through a lot of painful recovery time. Neither could I have a sick animal at home to die naturally if it was a painful/uncomfortable sort of thing , Id rather have it pts.