You have some valid points, however, we are on the outside looking in and have a very inaccurate picture of what is going on in Tiger's life or his game. We see the results of the efforts to bring his game back into line, but not his family life. One's family life deeply effects one's career, for men in particular. We have a tendency to compare his life with ours, but we should remember he is the result of an Asian culture through his mother. (not an insult, just a statement) and that is a different perspective on child-rearing, etc all things connected with it. We are very much aware of how his life went as far as his golf is affected, by his father.
As one poster pointed out, he is 36 years old, theoretically, a man. He is going to have do what has to be done, including pulling himself up to his success by his bootstraps. Sure, he needs help, but the admission of that is within him. Men hate admitting they need help. In fact, they prefer to muddle through rather than read the directions while assembling a piece of furniture, for example.
We need to continue to offer encouragement, but that only goes so far. The response and any action to be taken has to come from him. We simply have "muddle through" ourselves and trust him to do what has to be done. We have no knowledge of what factors must be considered when a decision (family or career) must be made.
While four years is a long time without a major, there are others who only win one and done. This is an unfair to say that he is not improving. I am sure you can think of others who have been having career/playing problems recently. Sure, we would like to see the "old" Tiger back, but he's not coming back, different man and circumstances. Everyone loves a winner (champion) but winning and success now have a new standard and different definitions.
TRUST AND BELIEVE IN HIS JUDGEMENT, CONTINUE TO OFFER OUR ENCOURAGEMENT AND SUPPORT. IN THE END, IT IS HIS LIFE AND HE MUST ACCEPT THE CONSEQUENCES OF EACH AND EVERY DECISION.