I would recommend going to therapy still...
Markie,
It really is sad that you must forego your own happiness for your children's. But I completely admire you for it and you should definitely be applauded for your efforts. I neither have a wife nor children, so I am in no place to empathize with your situation. Only you know what's best for you. We here can only give you advice from an outsider's point of you, but when you go home and look at your children in the eyes, we stand on the side lines.
Having said that, you are obviously doing this because you think it is in your children's best interest. However, I think children are the least judgmental individuals. All they need, is a parent whom they can depend upon and who will love them no matter what. And I think by depriving yourself from who you really are, you also are depriving your children of who their true parent is. Also, one think to thing about is that your children may not be as accepting of you when they are already grown up as they may be now.
But I think you also mentioned that it was also a financial decision. So it is definitely something to think about.
But the point of my message is that I would recommend you to continue with therapy. Even if it's little, I think therapy is a good outlet for you to express yourself in a drama-free, non-judgmental environment. I know it sure helps me discover myself, where I want to be, and where I am right now. It's very therapeutic.
Also, one thing I wanted to mention is that I used to be your way. I know how hard it is to keep it inside. But I analogized my feelings to my therapist as being like a volcano. It builds up inside, and one day it will eventually explode. You can only keep so much hidden inside. Having said that, some of you have higher tolerances than I do. So, what happened to me may not work for you.
Bottom line: I wish you the best of luck. PM me anytime you need a friend. And the decision lies within you. Just take down all our advice, but only you know what's best for you and your family.
Love