I voted Yes. To deny them this right is to question their sovereignty as a nation and since I believe the right for every nation to defend itself I think they should be able to arm themselves as they see fit. That and because Iran is a thorn in the american backside.
The only problem I see with a "nuclear Iran" is that many european nations supported the US in their recent military exploits, which means that I have no idea how Iran perceives the whole West, as main targets or secondary objectives...