Exposure does work! I did it to myself over a long period of time (at several key points in my life) and surprised myself greatly. Exposure can work if done gradually.
Exposure just makes it all worse for me and no child should be dragged to stuff if it is painful, I am an adult and can make up my own mind. After 46 years of exposure I need to ask myself if I really do need to be able to go to concerts, pubs, malls and other loud, crowded events and places just because a large percentage of people seem to enjoy that sorta thing? Nope, don't need it. Gives me more time for things I actually do enjoy. People who like to go pub hopping on Friday nights and find the library boring are not sitting around trying to figure out how to force themselves into enjoying libraries so why have I tried to learn to enjoy pubs? Why should I be expected to? Seems weird to me to want to be in a crowded space anyways and if it's important enough to me I can decide to be sick for awhile. Once went to an Obama rally and couldn't sleep or eat for 24 hours. Also ran a fever for about 8 hours after. Was it worth it? Yeah, it was for that bit of history and no one forced me, but I'm not putting myself through that for just anything.