What the heck is up with people needing service dogs for anxiety?

I've seen this three separate times in the past couple of months. Each time the individual could see perfectly fine.

One person is a family member of a friend. My friend told me his cousin has anxiety issues, so her family took her to a series of doctors which all told them their daughter is perfectly fine and simply needs to grow up, but that didn't solve their 22 year old daughter from behaving like a frightened snowflake baby. Literally a 22 year old baby!

So another doctor said the only thing he could recommend is a "service dog". Her family purchased a highly trained service dog at an insane cost (thousands of dollars) to be her emotional companion.

Everywhere she goes the damn dog goes, yet several doctors have said she's just fine but scared to grow up.

By the way...you guessed it...she's fat. And she acts so awkward that she's ostracized herself from her family and is incapable of making friends because she's an adult baby.

She's actually embraced this mental weirdness for so long that people are convinced she's legitimately crazy at this point.

She exists in her own world and her only friend is her service dog which is as expensive as a new car and she lives on the taxpayer dime in an assisted living facility.

She's 22 years old.

All she does is Facebook and play video games all day long and act as if everyone should pity her.

What...the...frick?!!!