I live in the US so the ban doesnt really effect me.
do I think its justified? From a drug user's standpoint no not at all. A couple kids drowned while on mxe and alcohol and suddenly there was a huge call by media and parents for it to be banned. it is very tragic that those kids lost their life because of drugs but mxe wasnt the only factor. They were also drunk but no one is trying to outlaw alcohol. People die everyday from all kinds of things besides drugs but only certain subtances are singled out because the general public still believes that all drugs are evil besides the ones the government says are okay (which coincidentally are some of the most toxic and damgaing to society).
But from the other side I can see why its been banned. This drug has been getting far too much attention for the past couple of years, just look at the size of the big & dandy threads on this site. it was only a matter of time until something bad happened to someone. Its a very powerful substance that is active in fairly small amounts and it can (or could) be easily ordered over the internet by people who dont know what theyre ingesting, they just want to get fucked up. The media of course fuels the fire also, with their outlandish attempts to stir up fear of drugs: "new drug MEXXYY KETAMETHOXY ROFLCOPTER IS THE NEWEST DRUG EPIDEMIC!" and suddenly every parent in the world makes it their life long goal to get it banned.
As for the effects of the drug, it is a dissociative, in the same family of drugs as ketamine and pcp. Check erowid or this site for more info on its effects.