I'm not trying to put him down as some slow thinkers might conclude from this post.
I am only trying to remind people.
Hashirama is indeed a God-tier Shinobi, but before we shower him with praise and give him all the credit, lets at the very least think about the 'why' and the 'how', which is what everyone seems to be forgetting to do.
Hashirama owes it all to his heritage, the Senju clans heritage. He is in fact a descendant of, and true successor to one of the offspring's of The Sage himself.
The man born with Rikudo Sennin's physical energy and body, the ancestor of the Senju clan, this guy: