Everyone knows that heat kills.
Saw blades. Overheated edges sharpened on a grinder. Motors forced to work harder than they were intended.
Nothing is susceptible to heat damage like electronics. Stereos, computers, high-intensity lighting with electronic controls.
I almost never turn on my laptop in the shop. Sometimes, if I need it for just a minute, I’ll fire it up in the back of my car, diagonally opposite the part of the garage where the most dust is generated. Otherwise, I go upstairs where the living level of the house is clean, and go back and forth to use it. It’s a little extra effort, but clogging the cooling fans and processor radiator fins with dust will shorten the life of your $1000 to $2000 investment. If you have a Mac, it’s even more.
While I could put my stereo’s amplifier upstairs and just run wires to the speakers, I change sources and volume levels too often for that to be practical. Sometimes the old iPod, sometimes Music Choice from the cable TV, sometimes the news off my TiVo app.
As a compromise, I have a reminder in my computer that tells me when it’s time to blow my stereo out every six months. Compared to tube-type amplifiers, today’s electronics run much cooler, but the manufacturer put cooling fins on the power supply for a reason, so I like to keep them dust- free.