Do I need a Trust?
I think the question is better worded like this - "Can I accomplish all of my wishes and adequately address all of my concerns without a Trust?" If so, then skip the Trust. It's one less moving part to maintain.
While there is no 'bright line' rule or answer to this question, the fact is many of us (and our families) can benefit from a Trust, as many of us have issues that cannot be adequately or better addressed by any other estate planning tool.
The main reason my initial consults average two hours is to address whether a Trust is needed or desired, and if so, what provisions should the Trust Agreement contain.