I don't think it's any of those three reasons. The Baroque tradition is very different, and for many, including western listeners steeped in the western canon, the music of Bach is an acquired taste. But, as with different cuisines from different cultures, the unexpected juxtaposition of familiar ingredients sometimes don't encourage easy acceptance or appreciation. As you are exposed more to the entire breadth of western music, your ears will develop an appreciation for each musical tradition. (Have you listened to Schoenberg, Webern, or most of the music written in the latter 20th century? Crazy stuff for anyone.) The contrapuntal, polyphonic textures of many of Bach's writing has no obvious relation to cultures outside the western world, and only repeated exposure to this style of writing will provide you with the structure, the skeleton, on which to hang the uniquely Baroque elements of sounds and textures.
Imagine when you were growing up, and your mother gave you a new dish that you had never had. Although you recognized most of the ingredients, the presentation and the taste was so foreign to you that you instantly didn't like it. However, as you matured, tried many different foods, new ingredients, from different cultures, your palate broadened, and your appreciation, if not affection, for those once unfamiliar foods grew by several orders of magnitude. In some cases, you actually grew fond of the same foods you detested when you were younger. That's how it is with western music. It is so broad, that one often starts with a few musical periods (usually Classical or Romantic), or even just a few composers or works, and then their musical palate grows.
Put yet another way, imagine being exposed to the English language for the first time, and remember how foreign the sound concept was. You had no point of reference for the vowels, sentence structure, and vocabulary. Same for an English speaker confronted with such foreign sounds as Hindi or Urdu. With time, one learns to appreciate, and maybe love, the uniquely beautiful qualities of the new.
In short, just keep listening. There is nothing wrong with your ears or your brain's processing powers. You'll find that Bach is much more than the few pieces most people have heard. Bach is not for everyone, but many devotees will tell you that many of his music encompasses and expresses the world in the most sublime ways imaginable. Almost religious. Just keep listening.