I am thankful the most important key in history was invented. It's not the key to your house, your car, your boat, your safety deposit box, your bike lock or your private community. It's the key to order, sanity, and peace of mind. The key is 'Delete.'
Anything that's different from your own realm of experience as a human being, whether it's driving a car or a boat, or using guns, anything that separates you from yourself and leads you more towards this character's existence is a big help.