Going to the moon is expensive and difficult, and no country other than these United States ever had both the cash and the expertise to do it.
“For some reason” no other country builds full size aircraft carriers, either. Yet we manage to do it on a regular basis and operate them routinely.
Gullible people who “just post links” would probably deny the existence of aircraft carriers, if it wasn’t so easy to drive down to Norfolk and see them with your own two eyes.
Listen to the NASA astronaut explaining how NASA cannot yet overcome the dangers of radiation around the planet.
Those are his words, not mine.
If you think he is an idiot go tell him and see if he punches you out Buzz Aldrin style.
My guess is he would politely sit down and explain it to you.