Though I agree with AFRIKANMAN that your approach may not be the best in terms of them listening, who fucking cares? It's not your job to save people. That's part of the purpose of not being a JW. It's not your job to show others the light, and if there were your friends and now they aren't, it's because of them, not you.
I'm sure that you felt great after. To me, that's what matters.
In my experience, people who return after getting disfellowshipped have been people who seem to have a hard time coping with their lives, or live with a constant sense of fear about the world, or inadequacy about themselves. That excludes those who return to maintain relationships with JW loved ones.
I'd say if it makes you feel god, yell your heart out.