if you would like the answers...
no. no. no, both are; like bptubbs is saying, it's people who choose to ruin it. who says we don't agree with it?!; i think we don't understand it. the cave paintings you speak of. to isolate one thing and take into account an understanding of it is not in and of itself enough to make an altruism that substantiates a universal understanding. he refers to him as father, he is father to all humans and yet is god in human form so wrong context of question.
doesn't matter on accuracy, no one was around back then; it's more important to focus the point into something easily understandable and more substantial. it doesn't matter but let's just say half of the human race back then. let's not assume, it's better to agree on a general understanding to further the conversation. it's not a matter of waiting, it's a matter of pulling ones head out of ones butt (in this case the majority of the human race or this one group) and see the truth of something for what it is. that is directly inaccurate due to the proceeding statement, that is not the pattern that is developing through practice but by every one elses understanding.
again by enlightening one's understanding, opening one's mind and seeing the truth. no, people suck cause god sucks and everything sucks so it is more appropriate to ask which one sucks more; christianity, islam or god (yes F.U.B.A.R., more sarcasm

) - but wait, there is a silver lining... humans are capable of great things and currently they are proving history true; some people like bptubb's words are proving humanities potential true. isn't that like asking who would you prefer to kill, person a or person b? it's actually commonly referred to as government and i would say humanity cause government and religion do nothing on their own; it takes humans to mess it up. each other, your neighbor or anyone who isn't you basically; everyone does it, some just a lot less than most cause it's part of the learning process. yes. yes. no. no. as a work in progress cause nothing is perfect, just like we shouldn't look at it as should but more of how or what. not exactly, it's more specific. same answer as before.
imo you seem to focused on other peoples words, lil things that get in the way and the scriptures themselves. try expanding your knowledge in other relevant fields of the topic and parts pertaining to it.