I lay things like deforestation on unbridled capitalism more than on Christianity. It is even hard quite often to assign an appropriate percentage of responsibility to religion for particular wars. Largely because religions both manipulate, and are manipulated. Sometimes religion is the source of an idea that leads to ill-advised actions; sometimes it simply amplifies something that's already present; sometimes it is used like a sock puppet by the real perpetrators, who are more governmental or business entities.

All that said, religion (or, more fundamentally, religious faith) has set back and/or impeded the progress of humanity enough that we would be better off without it. I do not seek the negation of religion so much as to convince people that there is a far better theory of knowledge (epistemology) than religious faith, and encourage the deconversion of as many as possible (not through proselytization, but by providing good info to people who are already doubting). In this way, eventually, religion will self-destruct organically. It is extremely vulnerable to education and critical thinking, which is why particularly the fundamentalist varieties of religious faith are so nakedly anti-intellectual.

So ... rather than decry the harms of religion I think we mostly need to make quality higher education both available and necessary for all. And we're on track, however unevenly, to do that.