Would Bitcoin ever theoretically get too “expensive?”

I've been a new investor and for the last few months I came to a realisation if all things go fine in the future BTC, ETH and exceptions will drastically rise so high in price (talking decades time) that a Bitcoin may be worth $10,000,000 USD and it will all exponentially skyrocket and its just life where everything slowly becomes exponential.

I hear the argument that "Once day you will be thinking of them at Sats" but respectively you will always consider the holy grail the Bitcoin.

I just had this thought due to a potential hoarding mentality when Bitcoin just rises like crazy talking decades (if all things go well)

And also I have no idea how Bitcoin can truly become implemented in day-to-day life knowing its life you're living in an age where what you're saving can potentially lose 10% in a morning and 80% in a month, imagine saving up for Bitcoin for a house deposit and then all of a sudden you missed out on the real estate market because prices are based of Bitcoin and now it just pumped 200% this week.