If Bitcoin didn't have fractions or sats I don't think that it's adoption will be as fast as it's going now, a lot of people won't afford to hold 1 Bitcoin and it will surely affect its value because demand will be very low. Almost everybody can hold some fractions of Bitcoin in Satoshi, the amount that you hold determines the value in your possession. The fractions of your Bitcoin remains what it is in the Blockchain, what changes is the value, it can either dip or rally. Many newbies will not understand this, even when they buy in sats they will panic if they see the value decreasing, proper knowledge is important.
And because of how fractional bitcoin is it makes it easy and affordable for people and if not for this mathematics I don't think people will have the funds to actually pay or be able to afford it and the issue now is that how many people can actually afford it because it's only the 1% of the 1% that can actually afford it so people need to just need to understand that and the idea of the 0. Is one of the best initiatives that Satoshi ever came up with because having this kind of reputation only few people will be able to afford it, but one way or the other still made it accessible for people to be able to buy will at least not less than 10 dollar so with this kind of settings it's has become a matter of choice for people to actually buy.