In today's rather tough market and job environment, there is IMHO only one way to fulfill someone's desire and dream to create simulation seriously reflecting any complex modern technology.
And this way is to do it on your own and in your free time!
Short of inheritance or winning the lottery to prop your and your family financial needs try to get a steady and possibly not too demanding day job and without any extra external pressure from anybody but yourself start building your dream. I know this from my personal experience, that this way is the safest recipe for success and it works in most situations and circumstances.
It is true that it may take much longer, but it can be done without risk to anyone yourself including. It will work unless YOU change your mind or lose YOUR enthusiasm for the Project and then it is not too much of a big loss ... except for your own free time.
So Good Luck!
