Ask HN: am I doing back-end right?

Hi, I have done quite few projects both in front-end and back-end. I've tried different technologies for both, but I think only back-end tech are relevant here: bare-bones PHP, Symphony, Node.js with Express and Passport, Flask The thing is, when I have to make a front-end prototype it takes me under 1 hour to have the first prototype and the pipeline ready to continue, be it Javascript or CSS. However, when I have to do a project with a User system there are way too many details to consider, even if I'm using helpers as Pasport.js For instance, for each of the PUT/POST/DELETE methods where there is some data, I need to check (in Express with Passport.js): - Authentication - Authorization - Is the data valid? - There is data at all - DB validation as a ReGex or similar - Build response (some times complex) - Handle errors in EACH of the previous steps I feel like I'm missing something as I'm repeating manually most of the steps. Is this the way it's supposed to be, that each POST method takes a large amount of checks?