We have a term for a similar situation- when the dogs want out, then want back in two minutes later, then back out, and then in... Sounds like your pup isn't quite doing that, since he didn't ask to be let back in, but it reminds me of it all the same... We say "Dog out wants dog in, dog in wants dog out..."
Our dogs are spoiled in door dogs, but we have one of those screen doors that has magnets, so it opens when you walk through it then closes itself, to keep the bugs out. Since, if I remember, it's not too cold for you guys right now, maybe you should think of getting one of those. I guess it won't help hubby feel better about him being outside, but then at least if he could let himself in and out, it would mean you didn't have to!
Haha, yes, we've done the same with Maiya. She's so young that she's still in the "That baby spider needs to go back outside with his Momma!!!" phase. I don't like bugs, but in order to try to raise her to respect life, I try to catch them and "reunite baby spider with Momma spider- OUTSIDE"!
And, yeah, I haven't gone in to animal cruelty AT ALL (she is only 2...), regarding food or otherwise. But, we have been to farms, and only ones where the animals are treated (relatively) well. I mean, I know it's not the same as being in like, an animal preserve with acres and acres of land, but they are well taken care of. She "knows" that, for example, chicken we eat is the same as the chickens she pets at the farms, but I don't know if she really understands it.
Where the "treat it well even you eat it" comes in to play is actually in regards to our dog... When we take him out on his walks, he often times goes "crittering" and she has seen him chasing all sorts of animals. He never gets them (he's well behaved and comes when we call, but she still sees the animal and sees him chase it), but we still explain why he does it. Then we explain why we don't let him eat it- because he has dog food at home, and you never kill anything unless you NEED to eat it.
But then when she plays at home, she has, for example, the wolf eat the rabbit (because she knows that's what happens), and I make sure that she treats the rabbit well and is nice and says thank you and all... And she never "kills" the rabbit, it's very G rated, heh.