Here is the question in question. After like 5 minutes of it being posted someone already voted to close my question for being opinion-based. How is this opinion based? I have questions with fixed answers!
All someone needs to do to answer this is be like: Yes, GraalVM should always be used. Yes, it compiles to machine language on each machine before it runs. It must be compiled and run with GraalVM to get the benefits. This isn't opinion-based!
You asked at least three questions:
When should I choose regular JDKs like Amazon Coretto over GraalVM.
Would I always get benefits if I chose GraalVM over a normal JDK?
Should I only choose GraalVM when I'm writing a more CPU or memory-intensive program?
and none of those are practical programming problems that have a definitive answer.
They might be interesting questions when you're brain-storming in front of a white-board or are in the midst of designing a system. And even then I would consider those questions discussion starters, not questions that get answered right off the bat.
As such the question as asked is too broad and the answers are deemed to be opinion based in the context of Stack Overflow. Note that there might be other sites within the SE network that take such question but if anything, they all take one at the time.
If you ask things like Should I do X for case Y you'll get much better answer if you ask: I did X (include code, preferable an MCVE) for case Y and this is the result. I expected Z but that didn't happen. What is the reason for that and how can I get Z.
How is this opinion based?
It's pretty straightforward. An opinion is a judgment or appraisal. To say that one "should" or "should not" do something entails judging or appraising the action in question. Such statements are not objective.
If you can write the question without using words like "should" or "best" or the phrase "the right way to", then please do so.
If you can't, it almost certainly does not belong on Stack Overflow.
I have questions
If you have questions, plural, then you have separate question posts, plural. This, too, is pretty straightforward. Only put them together if there is a compelling reason not to treat them separately.
All someone needs to do to answer this is be like: Yes, GraalVM should always be used.
"Should" for what reason?
There are hardly any real no-brainers in programming. If it really were always correct to use tool X over tool Y, you wouldn't know that tool Y existed. Because nobody would be using it, and thus nobody would be talking about it.
If the question is "will GraalVM show a performance improvement in my program", the definitive way to answer this is to try it.
If the question is "will the performance improvement from GraalVM justify the effort involved in using it", only you can answer that question for yourself.
I can tell you these things even though I have literally never heard of this VM before in my life, because it's just the common sense of software engineers.
