Where is your engineering, inventor spirit? This seems snowflakish to me. You want everything handed to you on a silver platter. But the reality is there’s lots of data out there that has no schema and never will. And if you don’t have proper tooling, you’d quit? Why not MAKE your own tooling?
Oh I meant to say I feel the same the way as the OP ('similar sentiments'), but I wouldn't literally quit my job. You're right, there's always going to be data out there with no schema; CSVs are one example. But if in your day to day work you're constantly encountering data with no schema or the structure/format/schema is constantly changing, then chances are you're dealing with a crappy system or working in a crappy job.
And making your own tooling is fun and all for the first time, but there comes a point when after you accrue enough programming experience, you realise how redundant it is, especially if the data is in a format as old as XML for example. There's a massive amount of tooling around XML, from XSLT, XQuery, XPath and all of them have facilities for dealing with schema-less XML data, but if you were to use a schema (or the vendor/3rd party provides one), then 90% of issues (and sometimes even code) dealing with schema-less XML go away. And the same is true for JSON as well.
I find it incredibly funny that people heap scorn onto XML as being some horrible legacy thing to work with, but then will go on happily working with JSON/YAML/or whatever and then have to deal with ALL THE EXACT SAME ISSUES, all the while not realising XML-related tooling has already solved them.