I agree with you. Although we will give the most importance to Bitcoin, it is our moral responsibility to consider all aspects. As investors, we all need to follow some things seriously in our lives along with Bitcoin investment. I think you can divide your wealth into several parts, that is, you should not keep your money only in your wallet. It turned out that the money in your wallet was stolen. So you can invest your wealth in any other cryptocurrency besides Bitcoin. You can also invest in any stock exchange. This three-step investment will not only meet your family and emergency needs, but by doing this, you can always invest in Bitcoin safely.
As a cryptocurrency enthusiast my advice is always to actually treat bitcoin as the only investment asset in the crypto space because to me Altcoins aren’t asset because of their risk and volatility, there is no altcoin that boost of been a store of value even if they are top market cap coins. Therefore when people say they are buying other altcoins as means of diversification I actually go against it because altcoins are gamble, so to diversify one should look at assets like Gold, Real estate and other areas outside cryptocurrency because that’s the real diversification.
As for security I agree with you that your holdings can be stored in different wallets most especially if they are huge, but the best form of security is actually having a good cold wallet with passphrase and then backed up at various or different locations.