The security risk is not remotely the same because in order to do anything other that store your Bitcoins (e.g. spend, transfer), you have to expose your money

The security risk is not remotely the same because in order to do anything other that store your Bitcoins (e.g. spend, transfer), you have to expose your money online. My dollar bills are never out there on the internet, so my only risk of loss is physical loss or physical theft. Because of this, it's better to compare Bitcoin to other forms of "digital/virtual representations of currency", like debit cards and credit cards. And that's where Bitcoin's mass-adoption-type use-cases tend to fall apart.