Durability aside, there are additional practical benefits to DVDs.
First, since DVDs can be copied with no quality loss, it's easy to make backups if you only have one disc and want additional copies. This is not possible with videotapes, which suffer "dubbing loss" whenever they are copied to a second tape. DVDs store video in a digital format, like files on a computer, which is why they can be copied perfectly.
Another related benefit is that you can make exact copies of your DVDs for family and friends. You can copy DVD discs quickly and easily, making them an ideal format for sharing and archiving video. Plus, they are small and inexpensive to mail or store.
DVDs have permeated our culture deeply, which means that you are virtually guaranteed that whenever you give someone a DVD, they will be able to watch it. Most folks have either a DVD player or a computer with a DVD drive. So you never have to worry about giving someone a video they can't watch.
By the same token, this marketplace acceptance of DVD means that you'll be able to watch your discs for many years. While new technologies are always on the horizon, consumers have adopted DVDs in such a way that compatible machines will be available for many years to come.