Why do people want to take care of the injured and not the healthy?

There are a lot of caretakers out there and they see an injured bird and they have to pick it up and try to nurse it back to health. They don’t try to provide any care for the healthy bird.

Of course, the injured bird needs help, and the healthy one doesn’t. There’s no point in trying to help the healthy bird, is there?

If the healthy bird doesn’t need help, does it need something else? Could that something else be worth the time of a caretaker or is that just not in the cards? Is there a reason why caretakers spend a lot of time taking care instead of hanging out with healthy birds?

Do you take care of the wounded most of the time? Why? What do you do to show your care when you have a relationship like that? Do you avoid the wounded? Why? Have you ever had a chance for a relationship, but turned it down because the person was wounded?