2) I doubt Saddam will ever send any kind of wmd to Israel. The primary reason is because he would be killing as many arabs as he would jews. The secondary reason is because he knows the Israelis would retaliate with a nuke in Baghdad.
1. Saddam has never worried about killing Arabs before. Saddam will kill anybody and everybody to aid his own survival.
2. An Israeli nuke on Baghdad would gain Sadam the support of the rest of the Arab states, cause huge protest in Western states, and might just save Saddam.
Don't forget his strategy in 1991 was to try to involve Israel, to rally the other Arab states to his side.
Saddam had WMD in 1991, and didn't use them because they would ensure his own death. He isn't likely to use them, or give them to terrorists, unless doing so increases his own chances of survival.
If the US and UK are prepared to stick around and rebuild Iraq, getting rid of Saddam is a good idea. If they aren't, and leave Iraq to the fundamentalists afterwards, it would be better to do nothing.
I am ambivalent about the war, because I don't have faith that the US and UK will put in the required effort (and take the required casualties) post-war.