This happened to me once and AWS entirely reversed the charges no questions asked. And its really something you don't need to worry about. AWS makes more than enough money off of legitimate traffic they don't need to deny someone asking for a refund for a genuine mistake.
And playing around with Serverless is awesome. Things can be created rapidly and very little maintenance. These days I cannot see myself building an application without at least some element of Serverless infrastructure if not the entire solution.
OK, but I'd rather not have to make a panicked call to AWS customer service and throw myself at their mercy just so I can do some coding in my free time, thanks.
And think about how that applies to some student at college or boot camp on a tight budget with rent/bills to pay.
And playing around with Serverless is awesome. Things can be created rapidly and very little maintenance. These days I cannot see myself building an application without at least some element of Serverless infrastructure if not the entire solution.