not so much that people don’t wanna help, its more that we can’t help. an mmo is a massive undertaking that goes beyond just getting hundreds of players in the same map at the same time and requires a massive amount of resources usually. don’t get me wrong you can still make an mmo anything is possible in the engine but its just not a good idea unless you have either the knowledge to do it yourself which comes from working on projects that build up to an mmo (if you cant make a basic multiplayer shooter then an mmo is out of the question), or a ton of money to throw at it to get the people who have the knowledge needed.
BUT if you really wanna go that route, break your idea into chunks and do it one piece at a time, there might be some books on amazon to help and be prepared for a massive undertaking (once again depending on project size)