Hear ye! Hear ye!
Ear protection is vital when it comes to the longevity of a musician’s career. With long exposure to high sound pressure levels, hearing loss and tinnitus (constant high pitched ringing in the ear) can occur. It’s best to start your ear protection early in your career to prevent irreversible damage later down the line.
This article from Beginner Guitar HQ goes into detail about the signs of hearing damage and recommends quality earplugs to invest in for a lasting career.