The people who always ask for evidence in arguments

also believe in conditions that are not defined by any evidence other than a self report. Take hearing voices as an example. The only thing we know is that there is a group of people who claim they hear them. It's entirely possible that they just have some other unifying factor that makes them report this but they aren't actually experiencing it. This willingness to believe one thing but not another is a result of a compassion flaw. The only reason you take someone at their word is because you are afraid of what happens if you don't but that is illogical. I want others to admit this because of the arrogance so often on display.

"Don't be mean to homeless man, you don't know his story"

Don't be kind to him either then. Ignore him