I understand your feelings exactly. The trouble is no-one has all the answers but I tend to disbelieve those who have a bias or ulterior motive for offering their resolutions. Some scientists have a bias but it's mainly religionists who are the main culprits. At least for a scientific hypothesis to be truly vindicated there has to be tangible proof but for a religious thought all that's needed is faith. Of course science has no real answers to a lot of things like life after death, the supernatural, how everything began etc.
It's hard to figure out where we figure personally in the grand scheme of things and whether we are just part of the cosmic cycle of life and death and we are no more important in the universe than an animal or a tree. Maybe it's egotistical to think so but we, the human race, seem to be worth more than that. Possibly is it's in our own hands to prove that and by having open enquiring minds the human race can move forward and learn more about what life and the universe is really all about.
I don't think the answer will come in my lifetime but I feel if I have lived a good honest life and have taken in as much knowledge as possible and made some accomplishments I can be proud of then I have done all I can do. Hopefully by many people doing the same and many doing more by reshaping knowledge and accomplishing much greater things we are always moving forward.
The trouble with religious promises is they are always reliant on personal salvation at the expense of others based on arbitrary rules. Maybe it's a togetherness and peacefulness of everyone that's needed to earn God's love. I don't know, I'm still working it all out like you are. At the moment I don't believe in God in the biblical sense but that maybe there is a higher intelligence. I believe that evolution on the whole is correct but beyond that going back to how the universe came into being or how life sprang up I'm not sure.
After being a JW it's incredibly difficult to let go of thoughts and promises that were so real to us for so long. I've been out about 3 years too the same as you and I'm thinking maybe we are in a settling down period. After having our world shook up when leaving the JW's we are in the process of finding our niche and can then re-evaluate our hopes and goals in life. I take consolation in the fact that I may not know where the road I'm on is taking me but it's better then the one I was on before.
I don't know if you've ever read any of Thomas Paine's writings but he expressed some of the issues you had in your post. The Age Of Reason is very interesting especially since he wrote it about 300 years ago. Here's a link if you wanted to have look -
http://www.infidels.org/library/historical/thomas_paine/age_of_reason/index.shtml