I don't do it either with my fiat currency except if the money is one I don't have any use for and I know I'm going to spend it carelessly on something which isn't serious. I will use it to invest in cryptocurrency instead of throwing it away on rubbish.I have some crypto assets, I started building my crypto assets in 2020. However, I have never used fiat money or money from my pocket to invest in crypto, I work on sites that pay via crypto and whenever I receive crypto payment, I try to hold as much as I can. If you are trying to save money every month, you should save as crypto instead of fiat currency.