Seems tendentious to secularize Bach. There's something to be said for deistic awe for creating great art. If you were just getting interested, here are some contemporary performances: BWV 1006 by Nigel Kennedy: https://youtu.be/nWx4pIe7FoE?t=179 BWV 988 (goldberg variations) Glenn Gould https://youtu.be/p4yAB37wG5s?t=169 from BWV 816, Gigue, Andreas Schiff: https://youtu.be/f_U0lm6HZMk?t=777
The Netherlands Bach Society has done an incredible job capturing his pieces, using stunning camerawork and high quality recordings. It’s such a pleasure. https://youtu.be/74suFWTO8P0 Also frankly the harpsichord is a much better instrument for WTC Books 1&2, especially with the added focus on video. Something about it just speaks to the soul.
Maybe. Personally, I love listening to the harpischord but for limited periods of time whereas I can listen to piano all day long.