Exactly what the title says, Christianity in all its various strains still stems from the horrendous old testament, and with all the awful shit that endorses, as well as with things like Calvinism and the general doomsday cult foundations in the religion, why do some people still act so charitably towards it? Christianity has proven itself to be a morally corrupt and oppressive institution at every turn. Or maybe I'm just too negative? 
EDIT
Ok guys I get it this was rather reductionist, and I definitely was disregarding all the good that religious folks have done, and that religion has inspired people to do, but again over correcting into enthusiastic support for religion can also be problematic.
The only examples I've seen of this are people saying it's antisocial and counterproductive behavior to crab dance this pope's death. It definitely is antisocial, it's only something a small group would enjoy and most would be very alienated by it.
This is just a fact of what it is. For some it makes sense to embrace the antisocial, often creating and preferring a new in-group. Unfortunately this tends to mean cloistering oneself and failing to actually build anything, and adopting habits that prevent it.
This forum's name was originally from a podcast by not-particularly-funny white guys in New York. They have not actually built anything. They are not of an organization. They don't mobilize anyone to do anything. They make snarky jokes poking fun at the liberal political establishment and electoral politics and are increasingly irrelevant. That is the inevitable trajectory of seeking conflict and infighting and being eagerly disrespectful to your comrades.