Let me try cleaning up your post for you, Senior Fussypants:
Dear original poster,
"STEM" is a very broad category of studies. Most of us who have jobs that could be called "STEM" jobs find that we're highly interested in some topics in this category (for example, software development), but not others (e.g., microbiology). Many of us are sufficiency interested in a broad cross-section of "STEM" topics to read about them on Wikipedia / Science Daily / EETimes / etc. But one thing is true of most of us: we're so interested in our particular corner of "STEM" topics that we've invested lots an and lots of time studying it and/or doing it as a hobby.
So when we hear you asking about "STEM" work in general, rather than something specific such as organic chemistry, that raises a few alarm bells in our minds.
First, if you're still thinking in such broad categorical terms as "STEM", it makes us think you're not particularly fascinated with any one particular subject area, such as organic chem or computer science. We fear for you: there's a long, hard path to proficiency in any of these areas, and we're concerned you lack the level of innate interest needed for you to succeed and to be happy.
The second alarm bell is that "STEM" is a buzzword du jour of politicians and educators who think of it as pixie dust. "STEM helps our economy!" "STEM workers make more money!" "Everyone can (and should) code, because STEM is great!" Those persons strike us as outside interlopers who are likely to damage our community and our productivity, because they have political power but not understanding. And so, when you use similar language, we're concerned that either (a) you've fallen for their foolish thinking, or (b) are a snowflake in the avalanche we fear is coming from their foolishness.
Please don't misunderstand us: if you're interested in putting in the time to learn the ropes, and you also have the right kind of mind, perhaps a number of different "STEM" jobs would suit you well. But you should expect to put in a lot of hours learning, and you should do a gut-check about whether or not you're really interested in spending 40 hours/week on it, year after year.