This might come off as mean, but this is my opinion on this subject. I'm a "jaded" raver and I have many "jaded raver" friends that spout this garbage all the fucking time. It pisses me off =P
Sure, they are going to come down and may be depressed or upset. At that moment, though, they feel they love you and are in the best place in the world. You've experienced that and sure it doesn't last.
Then one time I got to thinking about what people were saying concerning that ("MDMA is so fake" "It's just huggy speed with a worse crash", etc).
The problem isn't that MDMA is fake. The problem is that YOU are fake. MDMA has shown you the potential you have for love, empathy, and compassion. Sure, it may have been a drug, but when you actually sit down and analyse the experience you had, you can find a way to bring some of that artificially induced happiness into your own life.
From MDMA I learned that love is the best emotion in the world. I learned that every moment is amazing. I learned that life is a fantastic adventure with so much to be learned appreciated. I realise that I can become a victim of my past experience or I can love all experience for what it is -- experience!! I used to shoot heroin. I have that experience. Instead of being victimised by it, I choose to embrace it. That's something that I've done. That's part of who I am. I don't shoot heroin anymore, but I have that life experience that only someone who has done it can have.
Maybe MDMA doesn't work for you like it used to. What you're describing IS loss of magic (to some extent). This happens to all kinds of people at some point. This is the time to learn from what you experienced on MDMA rather than getting bitter / worried about what others are doing. They're loving life and having a good time. Respect that and worry about your own life =)