Because it will be inevitably asked of me sooner or later:
No, I'm not going to Mysterium.
And since I'm feeling especially persnickety right now, I'll tell you why:
Reason #1: I have no desire to pay registration fee. To me, that crushes the entire "gathering of friends" idea and thrusts the whole thing one step closer to being just a random "Myst convention". I think they should stick with the donation thing... After all, I really never saw the attraction of amusing everyone with fleeting little events that keep everyone away from each other. You could say that I should just not choose to go to those events, and I would have agreed. But now I have to pay for them, and I'm not going to.
Reason #2: On top of that, most of the people that I wanted so badly to meet can't go, so now it'd be me paying a colossal amount of money to see people who I would probably be better off not seeing me... Or vice versa. With all the two-faced Uru opinions cropping up now by the people who chased me off after sharing the same opinions early. Seriously... Have you been reading MystBlogs lately? Turns out that now, in addition to all the diatribe (that doesn't even matter since Uru is gone) about what should have been changed, some people are even saying that user-created Ages aren't the best thing to mix into canon... Now WHERE, oh WHERE have I heard that before? Oh wait! Me! But anyway, I abstain. Fact remains, though, that I honestly don't want to see anyone and I most definitely don't want to PAY to see anyone. Not that kind of money. Not when I'm planning on purchasing a super computer to encourage my isolationist tendencies!
Reason #3: That leads me into the 3rd reason, although I mostly explained it in the second. Not only are my closer friends not attending at all, but all the rest are going to be the people who think they're better than me for sticking Uru out to the end or some such crap. I don't want to talk to these people on the Internet, so why would I have a desire to meet with them in real life? Maybe so I can test their ability to defend an argument in real time? So they don't have a chance to sit on my blog and come up with a flat remark concerning my opinions and then sign it anonymously. Nah, I won't subject them to that kind of torment. It really wouldn't be fun to crush them in the first few seconds... Hmm. Or WOULD it...
Reason #4: I would much rather prefer a gathering of my most trusted friends... Just a few. No more than 10, maybe. Just to hang out without all the Myst swamp gas floating around the hotel atrium. Then we could really hang out and not be distracted by the plethora of events that a self-appointed committee feels it has to provide us. But, even with this small circle of friends, I have to choose between who I want to see the most. Isn't that great? Oh well... After a time, you start to understand the position of each side and the choice gets easier. That's no big deal to me, but I could still see it causing problems.
Reason #5: I really don't have a fifth reason, but I'm going to make one anyway, because everyone knows 5 is awesome... Oh wait, no, they don't. Nobody plays Myst or Riven anymore. They're all whining and crying over the second failure of Uru to notice, or whining and crying over those who bailed early and whine and cry that if we really cared, we would have stayed and somehow made a difference. All these newcomers who've only played just Myst 3 or just Myst 4 or just Uru. Even the last Mysterium I went to was a full-force Revelation indoctrination. It was no "Myst convention", it was a "Revelation party". With Uru fresh on everyone's mind, I see this as being more an "Uru-erium" rather than Myst. I would ask you to go and see if I'm right or not, but I'm going to bet that anyone who goes is going to have clouded judgment and won't notice in the first place.