We were adopted by our cat Zelda pretty much the same way. We think he was abandoned during the 2008 crash. In Las Vegas it was really bad for pets there. Houses were found abandoned filled with cats and dogs that had nothing to eat. The "stray" population exploded. Zelda came along and he just decided to stay. Now he's got an aggressive form of cancer, but he's still going strong. We're waiting for him to show us some sign of wanting to or needing to leave us. Hardest thing we've had to do in along time.We have an icecream guy that comes around. He said he was never a cat person then one day 20 years ago he found a starving stray on the land he rents. So he left food and water around in a box away from his home.
This cat came to his house calling for him one day as he opened his door the cat just sat there but didn't go in, after a few times of this happening eventually the cat trusted him enough to go inside. He had this cat for 18 years before he died, at the grand age of around 20.
He still misses his old friend two years on. I hope he can find himself another furry tormentor soon.