Religions seek a meaning to life and the world, which is fine - but it does mean that if you find none you are faced with coming to terms with that. In my discussions with christians and people of other religions, they always ask "But if you have no religion, what is the point of it all?" And the answer is I do not know - I have to take personal responsibility for making my life meaningful to me and to others. I am OK with that. I do not see that as negative. In fact the knowledge that we only have one life is a very good incentive to do all you can to live it well for yourself and those around you.
I have never been able to grasp why, if a deity were to exist, he/she/it is so damned opaque that people are left to create deities of their own based on their life experience and the cultural norms of their society. This has been so troublesome.
I do agree about the christian imagery that is so distasteful - blood of the lamb, images of an instrument of torture etc, sacrifices. We all, understand that these are metaphors, but they do not enhance life. I shudder when I hear of children being subjected to this stuff at school.