I don't think many bitcoin users want their currency to become main. As for sure, we can't even dream about it for next nearest 10 years.
Why do you think bitcoin users won't their currency to become the main one, not only in the market but also in the physical world. Being the main currency for bitcoin is a huge step for being more stable and being strong in the market because more people will use bitcoin as a currency and it will help bitcoin price to become higher and more stable and strong.