I'm happier.
But it doesn't come immediately. When you first learn the lies of the "truth", there is a down period. You question, not only the religion you knew, you question almost every value you held. That's especially true for us born-ins.
That's where sometimes some people go off on wild tangents, trying to re-discover themselves. I've seen it in people I know. I've been guilty to a lesser degree myself. That's why I encourage people to take things slow and to let time heal wounds.
It takes time to find who you really are. Once you do that, and you've put as much of the WT influence behind you, you find contentment and happiness that you never had as a JW. The reason that is is because as a JW, you were always prodded to keep looking to the future...and to keep working hard to garner favor from God (read: the organization). That treadmill way of life did not result in happiness. It was a false sense of security and joy. You thought you were happy as a JW because you were told that you were. But for most JWs, they had nothing to compare it to...again especially for born-ins.
Looking back on being a JW, I sometimes wonder how I ever felt happy. Always worrying about stumbling people, worrying about sinning, worrying about persecution. How can you be happy when you know you're supposed to be persecuted and hated?