Figure a childhood of near constant ear-infections, combined with pressured/ruptured ear drums, farm equipment (tractors, chain saws, mowers, combines, weedeaters, farm trucks, etc.), tons of shooting, USMC assisted firing ranges, explosions, more shooting after the Corps....

At 34, it's constant with the degree of severity intermittent. High frequencies are problematic, background noise is a HUGE problem.

I kind of look at it as a trade-off, though. My eye sight is absolutely sterling (20/15+; very close to 20/10, with a HIGH degree of acuity). So, I get schit for hearing as a balance.