You sound like someone who converted as an adult, and was not raised in this religion from birth (or a young age). You sound like someone who does not have any family still in. Am I right? If you do still have family in, then I definitely want to know how you were able to leave so easily.
I left many years ago when I was 23 or 24, but it was anything but easy. I agree that if someone is on the fence, that to leave sooner rather than later would be best, but it is not always that easy or cut and dry.
To tell them to just leave trivializes how difficult the journey really is. And it is definitely a journey, not a bridge you just jump off.