Tinnitus is awful according to every report I've ever heard.
Oh believe me it can really suck. I have grown pretty much accustomed to it though, and 90% of the time I don't hear it anymore. The only time it really bothers me these days is when I drink since alcohol temporarily increase the intensity of the ringing. Be smart and wear hearing protection whenever possible, tinnitus ain't no fun at all and there currently is no known cure.