Ava, what have you done?
Organized religion, I think, has a lot for which to answer, but I do think that's more to do with man and his way of trying to gain exclusivity - it's my club you all should join. Like Mick said: can't be a man 'cause he doesn't smoke the same cigarettes as me...
However, because man eventually fucks most things up doesn't mean that the basic tenet of religion is flawed. As I see it, the ten commandments cover most of the human interfaces, and provide a wonderful template for civilized existence together. Regarding even more basic questions, yes, I do believe in some form of a god because whilst 'science' claimed one origination theory after another, it always failed to come to a satisfactory explanation of the very first factor in the equation that's life: what was it? No use expounding about big bangs, because for them to happen, something has to be there to go bang. That, in turn, leads to the question of whence did it come? I think the reality will always be that it's beyond us to figure it out, that some sort of higher power is at play (or work?) and we simply can't understand or imagine it.
I have no trouble imagining an afterlife as a distinct possibility, probability, even. It makes some sort of logical sense, after all: what would be the point of growth, improvement of the self and the combined knowledge in the world if it were all for nothing? Most things, I note, do have a purpose in nature; we are part of that nature and I think it's a bit rich to hop in and out of the bits that suit the mood, circumstances and surroundings and deny the rest of the whole because it may not suit a personal conviction?
Physical immortality doesn't happen, as we know, but as for the spiritual part of us, why not? The world of dreams, of hopes and inner conflicts, emotions, all chemistry and nada mas? Sorry, can't buy that one, however plausible the arguments may be. We come in many parts.