You and some others on here seem to be assuming that most of the animals in shelters/pounds are ferals. They're not. The vast majority of feral cats never make it to a pound/shelter; they live and die (almost always horrible deaths) on the streets. For ferals, the best solution, IMO, is aggressive TNR programs, so that the same miserable fate isn't visited upon generation after generation.
Almost all of the animals at pounds/shelters are companion animals who have been taken there by their humans, or have been dumped along the road by their humans, or who have been seized because of abuse/severe neglect by their humans. They do not have survival skills.
I wasn't implying they were feral (that seems to mean something different to me anyway, I tend to only call animals feral if they live in the wild or at least more rural areas, without much exposure to humans), the question was referring to the fact that (presumably) you were not actually the cause of their situation being what it was.
So I ask you - is it better for these animals to die slow lingering deaths from starvation, disease and/or injuries, or is it better for them to die a quick and fairly painfree death?
Interesting thought. Obviously they would
suffer the least if they were killed quickly and (as far as they knew) without warning. Is that better though? In our case, doing that without consent would certainly be frowned upon. Faced with a similar fate, some of us would choose either way - to die now, or to take our chances regardless of how low they were - so to kill us in that way would be depriving us of that choice. A cat or dog in that situation doesn't understand the choice the way we do (that we know of) so it always chooses the same thing: to go on living as long as it can. There may be some exceptions (or not), but generally speaking animals don't seem to consider suicide an option, possibly because they don't understand that their own viewpoint can
end (and I can't blame them, as many if not most humans seem to share that opinion), nor presumably do they think it will
go anywhere in an 'afterlife' sense, so their only option is to continue until they can't.
Though 'can't' might be misleading. I mean they are
mentally as well as physically unable to go on, because they do occasionally give up while they could physically continue. As an example of what I mean: there is (or has been - I don't keep up) a way of testing anti-depressant medications using animals' will to live. If the drug is successful in such a test, rats (it could be anything, but iirc they used rats in the one I heard about) which are on the medication will swim for longer before giving up than those which aren't. In this case, there's no way out of the water, so swimming is all that keeps them from death. I've seen a similar state in animals caught by a predator (usually a cat or dog), where even though they can move and are plainly not hidden, they just stop trying to escape after if proves futile enough times. Some turn out to be mortally wounded or maybe die of exhaustion, but others if confiscated can eventually recover and go on their way. The choice for them seems to be present in its own way, but it takes
a lot for them to give up.
So, if we consider their opinions important in spite of being less informed, I think it would almost definitely be better for them to take their chances. We tend not to let less intelligent animals (including people to varying extents) make certain choices for themselves though. Unfortunately, since
we would not all make the same choice even knowing as much as we do about the situation, it's hard to really say which is better. You seem to favour less suffering at the expense of a future you aren't very optimistic about, whereas I would choose to try to fend for myself and risk a worse death for the extra bit of life and the small chance that I would adapt to that environment. In summary, I have no idea which is better for them.
As for "responsibility" - I believe in a collective responsibility that all of us humans have for these nonhumans that have been created by, misused and abandoned by, our fellow humans.
Being veg*n is easy. Being an armchair philosopher and critic is easy. The people for whom I have respect are those who actually do something to help nonhumans.
I will assume this answers my initial question then, since you would become guilty of causing their situation by inheritance or something. Maybe association. I'm not really sure of the exact word.