Well,most people on Craig's List are searching for sexual encounters.
So to think they dropped you and get your feelings hurt is unproductive.
Expectations.
Get paper and pencil and find what it is you have to give. Then ask yourself on the other side what you expect to receive. See which list is longer.
I get a great deal of satisfaction from helping others too.
I'm a volunteer Foster mom for an organization that needs help with abandoned kittens and feral mom cats. I've had up to 19 kittens here at one time. Some with moms.
Then when they're ready for adoption they go back. It's extremely rewarding. I love animals.
You can indeed make friends with animals.