Because of the last *crazy* GF, I had rats for much of the last 4 years. I didn't initially want them and didn't expect ever to love them. But they were well trained and raised with love, and to my surprise, they were maybe the most loving and affectionate pets I've ever had. Cute and entertaining, too. I always missed them when I was gone and looked forward to seeing them when I got home. I never went to the grocery store without considering what I liked that was also a healthy treat for them. When I'd walk through the living room, they'd come charging out of their cage, across the couch to greet me on the closest end. Total characters. The last two died Sept 28 and Jan 5, and I still miss them. But small rodents only live 1.5 to 2.5 years on average. I just can't take the loss that often (esp. after losing both parents in the last couple years and a few friends in the last half dozen).
When the first two were left with me (*crazy* GF bolted suddenly for Alaska in May '08), friends kept telling me I should set them loose in the American River canyon. Of course, the defenseless little guys wouldn't have survived the first 24 hours among predators, probably all of that in a state of terror. Never struck me as funny, but it did make me recoil at the thought of ruthlessly taking part in their execution.
Good luck placing the little critters.