It's the same reason we do anything.
Why go to the bottom of the ocean, with only a few inches of acrylic protecting you from the crushing pressure?
Why fly, when all that separates you from plunging to your death are a few connectors holding on the engines and wings?
Why travel in space, when only a thin metallic skin stands between you and an endless vaccuum?
The meaning of life is contained within the letter W. It's the Whys, Wheres, Whats, Wants, Wishes, and Wonders, that make life Worthwhile!