PLEASE READ! I Want Your Opinion!

So I've recently received a review regarding my sentence structures and my use of multiple tenses. I was told, by the reviewer, to keep my writing to all one tense, either present, past, or future. As a writer, I value critique, but if I were to stick to only one tense, the story would sound choppy and I wouldn't be able to hit on some key points. For instance, if I strictly use present tense, how am I supposed to delve up the past, allowing readers insight into a character's past that proves crucial to the plot development? Like if I strictly wrote in present tense, I wouldn't have been able to write about Inari's mother's past with her pregnancy because it happened in the past. Also, using multiple tenses in a single sentence is sometimes better than the traditional one tense structure. It allows better flow/sound to the sentence.

So for all of you grammar Nazis out there (I admit I am one too), I know what I'm doing. I believe I am a skilled writer (since I have been told that by all my mentors and professors), even though I'm only human and make mistakes sometimes. The point is is that as any other writer would do, I will use all the tools available to me (including the use of multiple tenses) in order to create a driven, pleasing, enticing, grammatically correct story. Now readers, would you prefer a bland, choppy, "grammatically correct" story with one tense throughout the whole thing? Or would you prefer a developmental, flowing, grammatically correct, pleasing story that uses multiple tenses?