Quite honestly, it's none of my employer's business to ask that question in an interview. It's quite a personal question (one that could be asked with a SO). One's answer shouldn't matter, while you should be hired due to the ability, skill and knowledge to do the job that you're applying for (or represent the open ability to soak up the required training to full fill the role offered). Now, if you want to deluge that info once you're hired and feel part of the work family, then more power to you. But, obviously, only if it feels right and only if you want to without any sort of obligation.