A 2 year loan for $500 is 24 chances for me to forget to make a payment, for a glitch to cause my bank / cc to not pay them on time, for them to somehow not not

A 2 year loan for $500 is 24 chances for me to forget to make a payment, for a glitch to cause my bank / cc to not pay them on time, for them to somehow not notice that I have paid them when I actually did, etc etc etc, any of which will either result in me eating some costs (completely eliminating the benefit of the 0% loan) or burning 1-10 hours on the phone with some clowns. What am I losing, whatever I would have made by investing that $500 over the same time period ? We're talking less than $50. I'm very lucky to be at a point in my life where I'd gladly give away "$50, 2 years from now" in exchange for "don't have to think about it, ever again".