If the price goes back down again to around $4000-6000, people will be able to buy whole bitcoin, I know people can buy fraction of bitcoin, but buying whole is a better deal.
What you mean is even if the value was down it's still unaffordable.Bitcoin is affordable but exactly not all of us can buy that one but the best definition on describe bitcoin is not unaffordable but I would say a precious one and unbelievable value price that exist in cryptoworld.
No matter what is the value of bitcoin, if bitcoin down at that price and then if you purchase bitcoin either the whole or in fraction bitcoin or how many bitcoin you wanted that is still affordable i you want to buy. As long as if you sell your bitcoin and the profit was there, even you buy a 1 satoshi then if you sell you have a profit the that's be better, that's not matter how many you purchased as long as you have a profit.
But yeah much better buying the whole bitcoin compared to fraction the more bitcoin you purchased the profit you have.