You wrote:-

That part I don't understand - I mean I get what you are trying to say, but really, the feeling, or thirst for feeling, and feeling grace, oneness, or however the language defines it --- there's no belief system. If you feel whole and centered, what's the point of attaching any statement of system to it?

The words you use 'grace' and 'oneness' - these are part of your belief system. Drop the beliefs and the experiences still feel good, but you are left with no evidence of the 'oneness' and 'grace' you are so certain of now.

It's hard to see this as you so enclosed in your belief system, but believe me, it's true!