For those of you who think you don't need earplugs, you need to be aware of what will eventually happen. It's not just the hearing loss, but tinnitus that you want to prevent.
You know how your ears ring after being near a firecracker or near someone shooting a gun? Once you have tinnitus your ears will be like that all the time with no way to make it go away. I didn't wear earplugs during my first few decades of riding and now I'm stuck with that ringing. I can tune it out, but if I even think about it, like right now, there it is. I'm stuck with it 24 hours a day, seven days a week, 365 days of the year.
If you ride for more than 20 minutes without earplugs you'll notice a bit of ringing. If you ride for hours without them, it will be with you for a longer time. Do it long enough and it stays with you permanently.
Tinnitus never goes away - Protect your ears now