if BTC hit 1 million $ in the future what will happen
When price of Bitcoin will hit $1 million, then everyone will hate Bitcoin simply because they will be forced to use it. If you think people hate Bitcoin now, you should just wait and see.
They won't hate it, they will flee crashing fiat to it. All of them. And they will be grateful for the option. Bitcoin will never be forced onto anybody, that's not how it rolls. Nocoiners will continue to hate bitcoin, but bitcoin will always be a choice rather than a requirement.