And that mold involves right-handedness. So we practice specialization. That's not entirely bad. Specialization in global economics terms refers to the idea that different nations can help each other through more efficiently dividing labor resources for production specificity. The U.S. creates software and Japan produces consumer electronics.
Specialization can work.
In kata, we often have sequences of three repetitions, or attacks that use the same side for each occurrence in the kata. By training one side repeatedly, we can possibly make that technique become a natural reaction if performed on that particular side. Practicing in such a way can be a real eye-opener.