I really don't plan on "genociding" anyone soon, nor if I did, would I expect the U.S. to fail to prosecute me, and it's not likely the ICC will come after me for my unpaid parking tickets, so my BP concerning this issue is still rather low.
I hear what you're saying. At my age, I sure don't have any concern. But, where will mission creep take this?
I've watched mission creep trample the Constitution too many times to believe the ICC will be limited to war crimes.