If you think that bitcoin will lose functionality because the supply is limited, no it won't. And just like what the post above me said, it is divided to eigth decimals parts. And besides, the limit makes the price go higher. The demand would go up but the supply does not, to the price will definitely go higher and higher.
There is essentially an unlimited number of coins, due to the divisibility of value. If we need more 'room', so to speak, we just need to add a few more decimal places. But we are forgetting that bitcoin isn't the only crypto. Bitcoin will most likely be the most consistently expensive coin, due to its longevity. But if we are talking about a scenario were bitcoin has become so widespread that 25 million coins aren't enough, we have a plethora of other options. Which honestly might be a better choice, bitcoin seems better for long term value storage, to me.