If Hashirama cells are so good, then why not get something better like Naruto cells? In the first place, Naruto cells aren't particularly unique. He is only partially Uzumaki. It's not his cells that give him power. Indeed, in order to achieve a chakra increase, it would be wiser for you to target Nagato's cells rather than Naruto's. Conversely, Hashirama, a genetic oddity, because his cells would be the most beneficial of all. Everyone searches for them. Madara Obito-Danza. These cells are essentially necessary for any mangekyo-sharing anona. Naruto's cells are fodder in comparison to Hashirama's. What can we learn from Naruto's cells? Given that he was unable to withstand Kurama's extraction, while Granma Mito lived a trouble-free life, Kushin also made it out alive. Kushin as circumstances were far worse. She made it through the extraction. Soon after giving birth, following and impaling. Let's now examine the results of utilizing Hashirama's cells. Wood style, chakra expansion, an increase in life force, boost in strength, visual improvement, etc. I'm not sure about you, but I'd much rather have Hashirama's cells than Naruto's.