One thing I forgot to mention, hearing is only a Once in a Life-time thing. Yes, hearing aids help, but go into a noisy environment, shops, or a restaurant while wearing them & you hear everything; with natural hearing you are able to turn off to the external noises, with hearing aids in you can't - you just hear noise! I will vote yes for ear protection; one protect what you have or in my case what you have left, I can sit here and wish I wore hearing protection earlier for riding, but being in Infantry when I started, all we had was a cotton wool like stuff for our ears, not like the noise cancelling stuff you have today; but then you cannot wear it in other environments which destroy more hearing than a quick blat around on a bike.
So, protect what you have or have not lost as they cannot repair Tinnitus or induced hearing loss - Yet! So live life as much as you can, and Ryde as much as you can, and protect what you have! Hearing protection, yes.
That's my 20 cents worth, take it or leave it.
PS: when my Wife can't hear me, she turns the volume up to a deafening roar and I still say "What did you say? It's too noisy!" and then even the dog runs out... (sick OZZIE humour)