Yes, using a crate properly for the containment of your pet is humane. Dog, by nature, are den animals and like to have a safe area in your home that they can call their own. A crate can provide this safe, personal area. Without a crate, your dog may find unsafe areas in your home to curl up.
Crates are a valuable tool to help house train puppies and adult dogs.
It's an area for your dog to take refuge if the household becomes too hectic or if small children and others frustrate him. It can be used to help prevent dogs and puppies from having opportunities to be destructive or disrupt family members at inappropriate times. Crate-trained dogs travel more conveniently. Crates can provide safety for your dog when traveling to unfamiliar locations. Crate-trained dogs may have an easier time if they need to stay in a kennel, since kennels will sometimes allow you to bring your own crate to house your dog.