I have a whole house surge protector installed in my electrical panel. My home theater systems are plugged into power conditioner/surge protectors. My computer equipment, NAS, monitors, and routers are plugged into UPS devices. My standalone TVs are plugged into surge protectors.
My listening room equipment is on a dedicated 20 amp circuit. All equipment, except my power amp is plugged into a Denali power conditioner; the amp is plugged into a wall outlet. During thunderstorms, I power down all my listening room equipment and unplug the Denali and power amp from the wall sockets.
If I have a direct lightning strike, my homeowner’s insurance covers that. I unplug my expensive gear because I don’t want to go through the hassle of replacing it. And I hope the power conditioner/surge protectors do their job well enough to prevent my other electronics from being destroyed.