Why OPT and not MWS?!?

I've been in and out of the scene lately and recently on my way back in I've noticed that OPT has been around for some time.
How much time? I don't know exactly as there doesn't seem to be anyone able to answer that question.
I have noticed one thing though, no one seems to use it.
Maybe because there is no real dedicated server for it or that it's not being advertised? I don't know exactly.
It's a decent piece of software, don't get me wrong. Seems bug free for the most part and if developed slowly but surely it can become much better. It's already in it's last beta stages and the version we see now is most likely what it would be ultimately.
But, my question is: Why OPT and not MWS?
I'm sure people rarely use Apprentice, if at all anymore and everyone seems to have switched over to MWS. Now, why would people switch over from MWS to OPT? Maybe I'm missing something and someone needs to enlighten me.
How much time? I don't know exactly as there doesn't seem to be anyone able to answer that question.
I have noticed one thing though, no one seems to use it.
Maybe because there is no real dedicated server for it or that it's not being advertised? I don't know exactly.
It's a decent piece of software, don't get me wrong. Seems bug free for the most part and if developed slowly but surely it can become much better. It's already in it's last beta stages and the version we see now is most likely what it would be ultimately.
But, my question is: Why OPT and not MWS?
I'm sure people rarely use Apprentice, if at all anymore and everyone seems to have switched over to MWS. Now, why would people switch over from MWS to OPT? Maybe I'm missing something and someone needs to enlighten me.