Using your logic, lets see your original "Greek" epistles then...
See, that defense works both ways FRiend!
You mean like Codex Sinaiticus, the Bodmer papyri or the Rylands papyri? There are thousands of Greek manuscripts and fragments dating back to the early 2nd century.
Of course, I never claimed that the autographs were still extant—only that the onus was upon you to show, by presenting earlier Hebrew manuscripts, that the Greek ones are translations. But until you can actually present those very early Hebrew New Testament documents, this idea that the NT was originally written in Hebrew then translated into Greek, is nothing but fantasy and conjecture.