The ONLY time I don't wear earplugs are the extremely few times I'm going like a mile or so at less then 45mph. But 99.9% I have earplugs in cause I'm usually taking a highway of some sort and going around 70+mph for several miles. Learned the hard way early on that it hurts to commute to and from work w/o them in. Of course working in an aircraft hanger there's a foam earplug dispenser they keep full. So I just use those (hey they're free :P) and replace every couple of weeks when it feels like they are getting weak.
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