One day we got an email from one of our prospective clients with his problem. The message was like this
"The product template needs to allow multiple variants to be added to the cart at once. The product is a digital download with many different variants"
They are a wholesaler and want to allow customers to order multiple variants/combinations with a single click of the same product. This is not a default feature with Shopify.
So, we started research on it if other eCommerce merchants also facing the same challenges. We got a few more. Which encourages us to build MultiVariants.