I skipped all of the responses before posting. If I have repeated what has been said forgive me but I have had little time lately to read ALL the posts and still wanted to respond to your post.
I feel very strongly that you DO understand what spirituality is, and yet, the fact that it differs so much from other peoples' perception of spirituality, it can become confusing.
A lot of people equate spirituality to religion. Religious people can be spiritual but it is not a prerequisite, although RELIGIOUS people seem to think that it is. Spirituality is a state of mind. It has absolutely nothing to do with going to church or the Kingdom Hall.
In regards to what you say about praying, I feel very similar to your viewpoints as to who/what you are talking to. I feel that God exists within us. If he also exists OUTSIDE of us, then that is fine, too, but I do not think that it means that he cannot exist within us as well.
The reason I feel so strongly on these points is that I have been a JW. I have also studied other religions as well, and it seems that, out of all the people that I have met in these travels, the people that feel that they are drawing on a power WITHIN themselves, rather than an obscure inanimate object are more happy, successful and objective in their lives.
I am also humble enough to realize that these are just MY opinions, and if YOU PERSONALLY draw any power from these thoughts, then great, and if not I have lost nothing.
May you and your family have a long and prosperous life. Your son sounds really cool and mature for his age. No matter what your thoughts are on religion, if you succeed in raising great kids, you have provided a fantastic service for the human race already.
Cheers to a great person, Brad