Five Guys still does the peanut thing, but they have many signs that say that there are peanut products inside and that they use peanut oil. I'm sympathetic with someone that has that type of allergy, but, they are not the whole world. There have to be places where people without those problems can go and enjoy the things that they like. There are many, many establishments that will take care of those with those allergies, it really isn't necessary that absolutely everything be altered for everyone. There are many places to get hamburgers that have no connection with peanuts at all. It's a big world, not everything needs to be one size fits all, as long as there are alternatives. Chose your options, don't deprive others of things that they can tolerate.
I never, nor do I think anyone else, would suggest otherwise. It's nice when places cater to you and your allergies, but sadly, it can't be that way everywhere. I do wonder, though, if places like Five Guys could do more nut free-options, as they would attract people who can tolerate having peanuts at another table but who cannot ingest them, instead of cooking everything in peanut oil, which makes it out for most.
However, you are wrong. There are very few places that cater to allergies. I don't eat out very much because there are too few places that do cater to allergies or that are nut-free. Subway, Chipotle, Panera, and some chain places are fine (for me at least, Panera has nuts, but I don't order their pastries), but I don't do any ice cream places, only safe smoothies place I have found so far is Smoothie King, had to give up Dunkin' Donuts, no Starbucks food items, and very few Chinese places (basically, one near me that does a good job, PF Chang's, and WDW), among others. I feel like my friends and I end up going the same four places every time we get food. While I understand that people like nuts (and hey, if you're not allergic, they are actually very, very good for you) and other foods that others can eat that some cannot, places can definitely learn more about how to handle when someone comes in with a food allergy. Outside of Disney, everyone just looks panicked when you say something. It makes it very challenging for those of us with food allergies and often leaves us feeling so drained that we don't have any desire to go back. Be glad that you do not have allergies as they are a pain to deal with.
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VERY good...! 
