All of this is, to me, just part of being owned by Great Danes. Every breed has their pros and cons. Many pet owners own the breed they do because of an impulse buy. Each breed was developed with a definite purpose in mind. Some breeds have coats that need hours of grooming to keep the dog in good shape.
Some breeds shed more than others.
Some breeds are very active and hyper while others are quiet and sedentary. Buying a puppy isn't the same as purchasing a new sofa. A dog is not an inanimate object to be thrown out in the backyard, occasionally fed and watered and forgotten. Buying a puppy, or adopting an older dog is like adopting a child. It's a commitment, or certainly should be, of yourself to this animal until the day it dies.