Defense attorneys take depositions because they’re trying to figure out your side of the story in your own words. It’s a little different than written discovery responses, which can be touched up by your attorney. They want to hear directly, in your words, from your mouth, in a formal setting. Another reason is they want to make a record of your answers so that they’re not surprised at trial. Further, if you change your story, then they can impeach you with that, which means they can show that you were lying either then or now. Basically, it’s a way for them to avoid surprise at trial. Lastly, they’ll use your answers in the evaluation of your claim, so the better you perform your deposition, usually the better your claim.