look at things from her perspective. she has a son who she loves and he is ranting and raving about this lab chemical, mdma, that he says is a wonderful and life changing experience. she reads about it, and discovers that it is extremely harmful to the body, notably the brain, and a lot of people, "ravers", use it time and time again and eventually suffer severe long term mental health issues from it. she has never used a mind altering chemical before, and therefore probably fears them and has no idea that new experiences like those acquired from drugs tend to enhance one's perspective on life.
some people are never going to understand, it's best not to try and convince her otherwise. i have a mom who is clueless as to why anybody would ever smoke pot, and she pretty much thinks i'm a depressed lunatic for smoking it daily. i once tried to help her change her ignorant view but now i don't say shit. your mom probably doesn't understand that as floored as people get on mdma, it kills things like shyness, anxiety and depression and allows one to experience complete freedom in the world of social things for a night. it's not a drug for getting fucked up on. she might not even notice you were high, she might just find herself wondering why you're in such a great mood you know? having this experience can change someone permanently and spark a desire to live life to the fullest, at all times, without relying on drugs. or, for the foolish, it can spark a desire to roll time after time. i for one these days try to be as compassionate to others as i am when i'm high on mdma. however, the path to this is not through repeated use of mdma.
what you may not understand is as fun as mdma is, it fries more brains than any other drug on the face of the earth. it's harder on the brain than anything and if you use it repeatedly, your brain will never be the same whether you notice it or not. she definately has a point. some people who have used it less than you suffer severe long term problems from it. nothing can make them happy, nothing at all, except the idea of using drugs. or even worse, they can pretty much become retarded. i have used it maybe 30 times and i will never use it again and consider myself lucky that i haven't fried my brain. using it more than a few times isn't going to get you anywhere, it's just going to damage your body and mind. i would quit while you're ahead and pursue other drugs that arn't shown to blow away massive amounts of seretonin, overworking that part of your brain that is responsible for all the love in your life.