Child Themes make it so you can change your parent theme to your heart’s content without concern of any update coming along and wiping the floor to your design. Hours of work gone in a click with the only way to get it back is to dig into your backups. Save the hassle by including a child theme. Theme updates are no problem and updates are mandatory in today’s security attacks; updates are at times patches just so you’re theme won’t be hacked. So if you haven’t already, child up. You’ll be glad that you did.