I first became a Microsoft Certified Trainer back when I was working at LobsterPot Solutions. Teaching is something I quite enjoy, though the opportunities are limited. The only times I've been using my MCT status in the last few years was to be able to attend the Microsoft TechEd conferences as a hands-on labs trainer.
Recently, Microsoft announced some changes to the MCT programme, including that MCTs must teach at least one course a year, and that receive a training quality score (feedback) of at least 6.
As it's been a few years since I last taught a course, I won't be able to renew my MCT this year. They have introduced an 'MCT Alumi' programme for inactive trainers, which I would qualify for, but I haven't decided if there's value in me doing that.