The difference is you are choosing between "learning postgres and have that tool your entire life" and "learning some vendors proprietary extensions so you can

The difference is you are choosing between "learning postgres and have that tool your entire life" and "learning some vendors proprietary extensions so you can stop using it when they shut down" The only way the personal math makes sense to me is that "learning sqlite" is like half a day of work, "learning postgres" can be significantly more, but its like saying you should just use hammer in the cloud instead of learning how to use screwdriver and other useful tools.