Yes , I understand , that you don`t control , his life , or other facts.
But , to wait , so long , for real serious changes , to happen , is not going to make you feel better.

I think , that you don`t know , what to do.Maybe , you love him very much.
But , if he doesn`t know this , or cannot see , that it is something , very important , for you , as a woman , then I don`t think , that he deserves you , to be his future wife.

You should really make up your mind , about this.Like you say , time goes by , and you are not getting any younger.

You can try , one final thing.That is , when you really want to start a new life with him.

Give him 3 months , to decide , if he wants to marry you , or not.
If the 3 months pass by , without , any progress , I would put an end , to this "relation" (if you can call it a relation).

And , look (seek) , for a more confident and serious man.
I believe , that there are enough , candidates , out there , who want to be your husband.

You just need to find him.

I hope this helps

Good luck

Eric