It is rare in this life that something is "always" the best or worst, etc. We all have unique situations. Personally, if I would have disassociated when I left, there would be a lot of people still actively in the organization that are now out. Due to the fact that many "JWs" continued to think of me as a "JW" and an elder, I was able to have a level of influence I would not have otherwise had. Family relationships were also easier. This is a personal decision each person has to make, and its not for anyone else to second guess in my view. That said, its not something to be decided on a whim or based on emotion. Simply weigh the pros and cons, and make the call that is best in your situation.