Does 'simple' mean 'you can buy it in Amazon and perform it in the privacy of your own home'? Because needing to book an office visit with someone who has had about a decade of medical training just to get the test done is not exactly 'simple' in my book. And sharing those results with the increasingly invasive systems of insurance and government and otherwise doesn't fill me with anticipation.

Overall I definitely do want to know, though. If I know that I am highly likely to contract dementia I can start doing things to attempt to combat it, or at least plan 5 or so years before that point to begin using hard drugs. You don't get any money back if you leave your body in good shape. I'd prefer to slide it smoking and smouldering across the finish line, missing both bumpers and with only one headlight hanging out. Then explode.