I am comfortable with my job situation, but sometimes I day dream about being fired just so I have a good excuse to take 6mo to a year off of work.
But dramatic quotes aside, since I have kids myself, I am leaning towards security, too. But I feel that this has indeed been blocking me a lot and I felt stagnating. The world is big and full of opportunities, but only if you go out and dare to look at them.
So I do recommend at least a long holiday ;)