I am a Christian and I think that picture is completely stupid. The biggest problem with Christianity is that it has changed to much. People are trying to mold it into what they want, and not based on The Bible. If you are going to believe in the Christian faith, then do it right or do not do it at all. It is people that do it how they want to that are ruining the image of the Religion.
That's always been the issue with... religion, aside from the obvious problem with literal interpretations of religious text.
People have always been able to go out there and do what they want and say 'Well, my God said it was OK" Then someone else goes "Fuck you, MY God said that's wrong and I can do this.
"Wtf, you're God aint even real mate"
"You're God's got like 12 fucking arms and my God isn't real?"
"Quiet, my God said it's alright to kill you now, because you're doing my nut in"
"My God just told me you're bad and naughty"
BOOM. Crusades.
Plenty of people don;t really follow their doctrine and what it dictates, they do what they want and justify it by being of their chosen religion. That isn't a gripe with religious people, it's a gripe with people in general.
I went to church from young up until I was 17, I got baptized and confirmed. In that time I had confessions as mostly you do, and being young and not taking it seriously I just said things like 'oh, I pushed my sister" and the like. When I got a bit older and a bit more curious I decided to admit that I was battling with my faith. The first time I admitted it, the priest was clearly shocked and tried to avoid talking about it, rather just absolved me quickly and booted me out of there.
I tried again the next time with my local priest, a nice guy about 80 who was always approachable. After I told him, he just said that's it's perfectly natural and it's actually a good thing to question your faith because you reach a more well informed decision. We had a discussion about it for like 5 minutes even.
Now I realize that story probably didn't have much to do with the subject, but the point is that there can still be good and bad religious people. The person who posted the picture is trying to mold religion around their personal beliefs and use it as a back up even though I'm pretty sure there aren't many verses about the perils of doing heroin in the bible.
It's not an issue with religion, Christianity in particular, it's an issue with certain people who would have religion serve them, and not the other way round.