I think you're in mourning. There's a stage of mourning where the only things that are remembered are good; the happy moments, the love, the caring, all the things that you mentioned concerning that JW couple.
The reality is that even if such memories are based in fact, they're just that, memories. The reality is something much more harsh. Your desire for peace and calm must be balanced against all the disturbing elements in the WT world which you know well.
Ever watch a sci-fi or fantasy show where a person has a chance to go back in time or into another dimension where they can be with someone or something that they once loved? Some go for it, some don't. The ones who try to re-live their past can only succeed if they remain focused on just that one feature of their life and times, nothing else can exist for them. Do you have an ability like that; to block out literally everything else except the slender thread of beautiful memory connecting you to these people and to the org? Do you have the ability to sustain yourself indefinitely in what amounts to an artificial existence? Are you willing to let go of anything else to which you may have formed an attachment in order to live in an imaginary world?
Mourn, but don't lose yourself in mourning. Let the pleasant memories have a place in your heart but live in the present, stay rooted in reality.
A.