I will do my best not to be judgemental or rude. I'm not sure how to say this kindly, but I will do my best. It sounds like your therapist's preference was to cease all contact with you after your last session. The 8 years he started with was an arbitrary amount of time he chose because he figured that was long enough that it would give you no hope of resuming contact. However, it sounds like you did not accept this and went looking for information to basically undermine him and pressure him into changing his position. If he were a more ethical person with stronger boundaries, he would have stood firm. However, it seems he has a low tolerance for other people's discomfort or anger towards him. He may even fear that if he cuts you off completely, you will file a report since you will have nothing to lose.

None of that means he didn't like you or care about you. What you seem to be forgetting is that the difference between your situations is that you are very socially isolated and he is not. While he may have enjoyed your company, he has other people in his life that he can spend time with. From your posts, I gather that your best friend lives in another state and your other friends are online. So he was a major source of social interaction for you and his absence will create a void.

As for your conviction that this experience proves that you should never trust people, I'm not sure I agree. I think there are many reasons to distrust people, but this isn't one of them. This is someone you paid to spend time with you. Such a person can never be depended on to remain in your life.

I think what you need to learn is that different people can be trusted with different things, and very few people can earn complete trust - and money can't buy that. For example, you might trust a therapist with knowledge of your phobias and childhood stuff, but you would not "trust" them to always be there for you because that is not something any ethical therapist can guarantee. You might trust a family member to care for your child but you wouldn't trust them with knowledge of your traumas.

I guess my point is that therapists are like most other people in our lives and we can choose to trust them with certain things. However, it is unwise to give complete trust to a therapist, because you should only give complete trust when it is reciprocated in a mutual relationship.

Finally, I feel that your comment about not reporting because "it's not the kind of person you are" needs to be addressed. I don't intend to put words in your mouth, but that could be interpreted as casting people who do report their therapists in a negative light. I've never heard someone say "it's not the kind of person I am" when referring to something good, so I just feel like it's worth saying that there's nothing wrong with reporting unethical therapists, and doing so does not make the client a certain "kind of person" to stand in contrast to those who don't report.