Surely? Centralization?
Read this:
https://www.coindesk.com/tech/2022/02/17/bitcoins-value-depends-on-its-decentralization/

Maybe you meant its volatility?

Well, whatever you meant, in my opinion, there are several types of person who are investing in Bitcoin:
- The one who really knows Bitcoin much, the trust value, and also its specialty as cryptocurrency, are the one who is holding Bitcoin for the long term, with a high trust that the value and market cap will always increase.
- The one who refers to profits. The long-term holding of Bitcoin will always bring high profits for its holders. Although the value of 1BTC will be always 1BTC, but in certain time after long-term period of investment, the value compared to fiat will be highly increased. And I think this profit is the most reason everybody wants to hold Bitcoin for the long term.