There is an argument for just putting a healthy percentage of income into savings/investments each month, and then not worrying about anything else beyond making sure what's left doesn't run out each month, but I really believe everybody should track their spending at least for a little while. It's just so easy to do now with software, and I think almost everybody will find they are spending on something that doesn't give them enough value to justify it. We pretty much cut our restaurant spending by 25% without any pain. Just realized there was other stuff we wanted to do with that money and a lot of that spending was just "it's easier to go grab food than spend 15-30 minutes putting something together".Count me on the 50% that doesn't know if I need to know the $ amount. I have no idea how much I pay for all the streaming services, and I don't want to know. If I were living paycheck to paycheck, I would know. I have suggested to my wife that we cut a couple, but she vetoed my suggestion.
Even the little things like streaming add up. A $100 a month habit takes about $30k in savings to fund at retirement. A lot of people aren't saving $30k a year for retirement, even when they're near their peak earning years, so thinking of it as representing another year of work to keep spending on it makes it easier to drop to me.