Originally Posted by
Polaris OBark
In 2014, I had the opposite problem. In order to get hydraulic disc brakes, I was forced to get Di2 (as they were bundled when they first came out). I have zero regrets about either, in retrospect.
The main problem you are facing is that most of what is on the market bundles Di2 with disc brakes. (I think this is also true for SRAM and their equivlant.) If you would be willing to reconsider your stance, may more options would become available, and I can promise you won't regret it (at least if they are Shimano Disc brakes).
I agree with all of this, and will add that some nicer bikes (such as Ultegra Di2) come with carbon fiber rims, and those will all have disc brakes. If you DO find a Di2 bike with rim brakes, you'll be limiting your wheel choices going forward. (I offer this advice as someone who has a twenty-year old bike that is on its...Hmm, let's see... fourth or fifth wheelset.)