OP, this section should only discuss Bitcoin
, I know you are trying to compare but I'm sure it will suit the Altcoin section.
For the diversification and Volatility, I would like say just that, by only having Bitcoin you are more secure in the crypto industry, with alts it's not at all reliability and risk management it will be only a more risky scenario. Let me explain Bitcoin is considered the most reliable one, when you mention that volatility volatility is not only based on the market price an asset will be considered more asset it lacks transparency and with a maximum of the alts you'll face transparency or supply control issues.
Bitcoin is far more reliable, when it comes to diversification it is a good thing for better financial planning and asset management but when you are only in alts with a diversified portfolio you are in a reliable scenario, with Bitcoin if you only hold Bitcoins, the risks in more controlled range, when we look on the long scale.
The hype and recent market price appreciation ne'er decide the reliability, but History also does, of the narrative, potential does, sentiments does, adoption rate does, utility does, transparency does, decentralization does, the community does and Regulation does.
In the realm of decentralization, transparency, community engagement, narrative strength, widespread adoption, regulatory compliance, and overall potential, Bitcoin stands unrivaled. It outshines any other asset class when considering these crucial aspects collectively. There's hardly a contender that can match Bitcoin's prowess in these key dimensions.