I try to unplug it all now. I have lived in my house now 36 years and used to work outside the home. Ground surges from lightning are a real issue here in the mountains of Colorado. Twice I have had equipment fried by lightning. First, one channel of a dual mono amp took a hit and proceeded to blow. It's surge also blew the woofer of the speaker it was connected to. The woofer was kindly replaced by the speaker's maker (easy install by me), and the amp was sent to the manufacturer would repaired it.
The second time, about 5 years ago, it fried the D/A processor and a different power amp. This time the repairs/replacements would have been much more expensive and the insurance company balked, telling me I had to prove it was from lightning. WTH!
I have always had "protective" surge connectors, with guarantees, but those don't mean diddly. They may protect from regular utility company surges but not from mother nature. Now I work from home and unplug when I can.