This question has been raised several times, and I have noticed that some people conclude that the lack of adoption is due to people not understanding Bitcoin or seeing it as a scam.
It's unlikely that this is the case today, as Bitcoin has been around for over a decade, and negative perceptions have mostly dissipated. Rather, the low adoption rates may reflect a general hesitation towards a risky investment, especially one with such high market volatility. People may be more inclined to save their money or invest in low-risk markets, despite inflation.