I feel your pain. I have almost completely stopped writing in coffee shops and I miss it. It seems like the only way I can stand it is to plop in ear buds and listen to what I want to listen to. But then I miss out on the white noise that is calming, that noise that sounds a little like "banana-banana-banana" with many conversations blending together. I still have my eyes open for a coffee shop or cafe where I can be comfortable, but so far it has been a fool's quest.