I'll get flamed for this, but here goes....
The "I need a service dog/cat/lizard/whatever to calm my nerves and keep me from being too anxious" is beyond the pale for me. Simply too freaking much. For every nerve of yours that the animal calms, it agitates the nerves of at least one other person, and possibly the nerves of many.
Having a service animal because you lack sight, etc. is one thing. But because you are too anxiety ridden? Come on!

So you take Brutus out with you so you can stay nice and calm....Never mind that 3 kids and an old lady just had to leave the store because they're scared crapless of dogs?
There has to be a balance. The blind person's need for a service animal trumps and I can see that. But I don't think one person's anxiety should trump another's anxiety enough for them to be able to take an animal with them. Become friends with Xanax or something. Learn to breath deeply. I don't know.....It's all just a little too snowflakey to me. I fear a day not too far in the future when the mall will be full of nervous, shaking humans holding nervous, shaking Chihuahuas.
More and more people keep taking their non-service dogs EVERYWHERE with them. Add to that the many people who are hauling dogs around claiming they're service dogs when they're not.
TRUE service dogs don't even stand out anymore. You can't spit without hitting a dog in public. I can see why children cannot understand that service dogs are to be left alone and respected as working dogs. True, they should be taught better by their parents, but it's confusing for them when everywhere they go they see dogs, dogs, dogs.
When I was a kid and we saw a dog in a store, you knew good and well it was a service dog and we left it alone. We were in awe of them. But for kids today, they don't stand out as such because of the sheer number of dogs they see in public.