Ah, where should I start… First off, I agree that the “forbidden love” plotpoint makes sense and functions just fine, but most people just disagree with it. The main reason that I dislike that subplot is because it makes the Jedi seem less likeable and I think it seems out of character for personalities such as Yoda to enforce that rule, but that’s just me.
How would it be out of character for Yoda to enforce monastic celibacy? In the Original Trilogy, Yoda is a harsh teacher who begs Luke to let his beloved friends die so that he can finish his training.