The baby birds grow up and won't come near us anymore. The opossums cringe and hiss when we feed them. The squirrels get gnarly and growl and even bite. When these things happen we have done our job. If we end up with an animal that remains dependent on us, we have failed in our mission and may have ruined a wild animal for life.
Baby wolves are as cute as little puppies.
But if you are considering obtaining a wolf puppy you must look at the future. Nothing stays a baby forever. No matter how much human handling the animal has, its basic instincts will kick in. Wolves are a large, strong carnivorous predator. They are a very social animal within their own species, establishing a family group that stays together.