You can be rightly proud of what you produced at StackOverflow/StackExchange. You need to be proud of your "work" with your family too, and it is a good thing that your have the clarity to realise this and that you have the opportunity to do something about it. I recently also became the father of twins and at the time a really good (in the sense that it would double my already adequate income) career opportunity came along. But, like you, I realised something. What's the point of pulling 80 hour weeks, week-after-week, just to pad out your wallet when your kids are missing one thing they need more. You! Fathers only get one chance at this. You made a brave choice. I think you made the right choice.