Converting a Traditional IRA to a Roth IRA

I'm struggling with the decision as to whether I should convert my traditional IRA to a Roth IRA now that income limits have been lifted. I think hearing from others as to what helped them decide either in favor of making the conversion to a Roth or sticking with a traditional IRA may help me make my decision. For those of you that are taking advantage of the elimination of income limits and converting your traditional IRA to a Roth IRA, I'm curious to hear what you used to help you determine that a conversion was right for you. And for those of you who are not converting, I'm curious to hear why not.