Yes.  When it was convenient I did between 2014 and 2021.  I've started to HODL it now though.  If I need extra cash rather than spend my bitcoin I now borrow against it on AAVE and spend the USDC either directly or by depositing it into my bank account and then spending it like normal money.  Coinbase currently will let you withdraw bitcoin into a BASE address and it magically becomes cbBTC which is technically not bitcoin but they automatically convert it back into bitcoin anytime you move the cbBTC out of your BASE address back into your Coinbase account.  This is handy because it allows you to borrow against the bitcoin on AAVE on the BASE network.  If you want to use the Ethereum network than you need to convert your bitcoin to wrapped bitcoin, wBTC.  But then you have to contend with the rediculously high Ethereum gas fees!  I mention it only for those that may not trust Coinbase.  I don't really trust either one of them but I will put a bit of trust in them when I need to borrow a bit of cash against my bitcoin.  Then as I am able I pay back the loan.  That way the bitcoin stays intact and continues to appreciate... hopefully. :=) Plus no taxable event occurs because I never sold it.  Because it's a bit volatile you do have to be careful how much you borrow against it.  But I digress. Regarding the question I bought computer stuff off Newegg and paid for subscriptions as well as paid for pharmaceutical drugs.  In every case where I spent my bitcoin I spent it directly.  I did not use the bitcoin debit cards etc.  I am a bit irritated at the cost of using such instruments.  Tradfi has really infiltrated the crypto sphere and is capitalizing on making money in it.  What should be happening is everyone should be using crypto directly and leaving tradfil completely out of the equation.  Just my two satoshi's worth of thoughts.  Kresp.