Great questions and stories guys - I will try to do more complete answers later and/or just put the relevant chapter of the FAQ's here for folks to read.
A couple of quick observations:
Yes, cats are a danger to wildlife and that is the reason why places with no native cats or predators like New Zealand and Australia are working towards having ALL pet cats be indoor cats and replacing barn cats with other forms of pest control.
In most of the rest of the world, barn cats (along with small dogs and ferrets) have been helping humans protect their crop storage since the dawn of agriculture.
In the Barn Cat book, we talk a bit about the problem of invasive feral cats vs your barn cats; and yep sometimes a farmer or smallholder has to protect their livestock, chickens and/or their own barn cats from an invader cat (usually a feral tom sometimes with gang member cats).
One reason for having your own barn cats is that they tend to keep the feral cats at bay and I also talk about rehoming barn cats that become a danger to your own livestock - this happens sometimes too - then rehoming as pets are often the best option.
Siamese emotional meltdowns - we have two rescues "meezers" in our menagerie one is a snowshoe lady and the other is a huge old fashioned apple head tom in a black catsuit.
Smutty (pre-named) is right now yowling outside my office door having been banned a couple of months ago for marking the walls (and I see clients in here) he and Brownie both get very emotional and vocal when they are not getting 24/7 attention from their humans.
We deal with this by a combination of ignoring it when required and let them both sleep with us all night and every night, also special cuddling sessions throughout the day (like every time I go to the bathroom).
The ancestors of these cats were bred for generations to be guardian temple cats who were highly attached to their people and trained like dogs to apprehend potential thieves.
They are a bit more dog like that most breeds of cats and bond with their people more closely than most cats so they suffer emotionally more from separation anxiety than most cats.
As the human, you have to set some boundaries just as you do with a puppy.
The good news is these kitties tend to be highly intelligent and can be distracted by toys, games and other types of stimulation.
Finally
Sit Beside You Cats
Many cats, especially former ferals never really enjoy sitting on people the way Baron Tiger Von Tripod is right now (and making it really hard to type). They love their people in their own way, enjoy being near you, may play games with you and watch you but they may never want to sit on you -ever.
Many will come to the point where they will enjoy sitting beside you and even accept occasional petting, especially if you spend a lot of time just sitting quietly in the same room with them watching TV, reading or quiet activity that isn't startling and feels safe.
Sometimes after several years of sit beside you, they will surprise you and crawl into your lap or more often onto your sleeping form at night.
They do love you, they just don't like being held very much; other cats are like limpets and getting them off your lap even to type this post is very difficult.
So you can blame any typos on this particular post on his one very friendly front paw lol!
Ok again thanks gang and keep um coming I may not answer everything here and now but I am reading and researching - I have to research the feline acne question as I don't know the answer which makes it a great question.
Baron Tiger Von Tripod - a couple of hours after his rescue from under an oil drum and before the amputation of his injured front leg (it was dead and useless).