Even if you don't plan on driving, I recommend getting a license (at least in the US). Insurance rates fall significantly if you've had a license for 7+ years, even if you've never driven.
Sure. If you want to have tho option to drive or plan to drive later then getting the license as early as possible (when it is also easier to learn to drive) is sensible. But I don't think this calculations goes off it you estimate the chances of ever needing a license below 20%. In that case the costs will probably never pay off and the chances will plummet shortly after your adult work life adjusts to the facts.
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This post is on commuting and transportation.