That's a lot of pressure to put on you! If you are really that special an employee, you should ask yourself if there is anything that would convince you to stay

That's a lot of pressure to put on you! If you are really that special an employee, you should ask yourself if there is anything that would convince you to stay. It sounds like you have a great negotiating position. Often people---especially programmers---feel uncomfortable asking for what they want. If the current deal isn't benefiting you personally and you're that important, then tell them what it would take to keep you. If there is really nothing at all that would make you stay, then I don't think you're obliged to stick around. But you might want to talk with a spouse/friend/family member before making that decision. Good luck!