not servers
not stripe fees
not even churn honestly
the real one for me was decision fatigue
every day starts with 40 small decisions before i've written a single line of code
which bug to fix first, which feature request to ignore, which customer to reply to, whether that one edge case is worth building for or not
individually they're nothing
but by 2pm my brain is cooked and the stuff that actually moves the needle keeps getting pushed to tomorrow
mental bandwidth is genuinely the most expensive resource in a solo saas and nobody budgets for it
what hidden cost hit you harder than you expected