Lerca,
Yes, once you fall in love with a breed, you are in for it! I have had (in this order) a collie, german shepard, collie sheps (they got together), doberman, lab, schnauzers, Yorkie, and this is my third shihtzu. Family members have had border collies, aussies, red heelers, poodles, chihuahua, dachsund, bassett hounds, and a mutt or two. Good gried! I never listed them before...
Before getting this one, I decided no more pets for the very reason you state, who would take care of it when I die? A dear friend who is an animal lover and much younger than I, promised she would take my dog if I die first. That removed the last excuse.
I think your idea of a rescue farm is very cool! That would be a great place to be, surrounded by dogs. I met a lady musher in Canada who had 12 Siberians and her barn design was amazing! And brilliant for the purpose. It wouldn't work for some breeds but for them it was perfect.
Meanwhile, my LG is perfect for me at this time of my life. Whoever trained him did a great job as he is obedient and fun! He loves to run and is very fast. He picks up his toy and stands there and stares at me and dares me to join in fetch. I will stand in the middle of my small back yard, clap my hands, and he takes off running, around and round the apple tree, zips past me like a streak, makes a U-turn and zips past me again in the other direction. He slips and slides in the leaves in the turns but never loses his footing. We had a foot of snow fall last week and he plowed through it without a thought. He stays very near me at all times, watching and listening for direction, and I haven't seen any separation anxiety. I am considering taking private lessons from a dog trainer and setting up a mini agility course. The reason he is so good is because someone much better than I trained him. I gotta get better at this. Or at least as good as him, lol.
He came to me by whatever power. If I had heard this story from someone else, I would have poo-poohed it and thought it silly. Life is funny. Just when you think you know anything, it slaps you in the face and like Schultzie on Hogan's Heroes, it says you "know nothing, nothing!" Sometimes I look at him and ask him, "why are you here? What am I supposed to learn from you?" This one is different than all the others I have had . He has yet to answer.