I don't know why people think that ------- Iran don't want to destroy Israel or that Israel doesn't have a right to defend it itself against terroristic aggression outside the rule of law.
For your answer and another great example of why people believe a lie or myth rather than the truth please refer to:
antiwar.com Article Title: "Wiped off the map - The rumor of the Century"
Here's a quote that explains why this is believed even though it is false propaganda to support a war of choice.
"Before we get to the infamous remark, its important to note that the 'quote' in question was itself a quote - they are the words of the late Ayatollah Khomenei, the Father of the Islamic Revolution. Words belong to khomeini and not Ahmadinejad. Thus, Ahmadinejad has essentially been credited (or blamed) for a quote that" (is not his)
"So what did Ahmadinejad actually say? To quote his exact words in Farsi"
"Imam ghoft een rezhim-e ishghalgar-e qods bayad az safheh-ye ruzgar hahv shavad"
"That passage will mean nothing to most people, but one word might ring a bell: rehim-e. It is the word "REGIME." promounced just like the English word with an extra "eh" sound at the end. Ahmadinejad did NOT refer to ISRAEL the country or Israel the land mass, but the Israeli regime. this is a vastly significant distinction, as one cannot wipe a regime off the map. Ahmadinejad does not even refer to Israel by name, he instead uses the specific phrase "rezhim-e ishghalgar-e qods" (regime occupying Jerusalem)."
"So this raises the question.... What exactly did he want "wiped from the map" ? The answer is: NOTHING. That's because the word "MAP" was NEVER USED. The Persian word for map, "nagsheh" is not contained anywhere in his original nor was the western phrase "wiped out" ever said. Yet we are led to believe that Iran's president threatened to "wipe Israel off the map." despite never having utterd the words "map" "wipe out" or even "Israel"
"The AP deliberately alters in IRNA quote to sound more threatening. the Israeli media not only repeats the fake quote but also steals the original authors words. The unsuspecting public reads this, forms an opinon and supports unnecessary wars of aggression, presented as self defense, based on the misinformation."