Sound engineer here. Deaf. Loud sounds (100+dB) do matter though because ear damage is cumulative. In fact, over 75dB is the threshold for ear damage, but that is when spending protracted amounts of time in that sound level (believe it or not a bar full of people, without a sound system, will top that just talking/laughing/etc). But my answer is no I don't.
I should, especially indoors, but my upper mid range hearing is so bad that I often miss the sense of fast speech as, depending on accents, consonants can be indistinct anyway so minus a lot of what distinguishes one from another... I have some gucci custom in ear defenders which provide true -28.6dB, but if I wore them while skirmishing I wouldn't be able to understand anyone except by gestures or shouting!
I really should get some actual Sordins, but so far I just call myself dead if I can't get out of somewhere where the opposition are pyro-happy.