You must admit that $40k bonus after tax is a huge, atypical amount of money. It makes your effective yearly income to be about $156k.
It reminds me of the mrmoneymustache.com guy, saying "anyone can retire early! Just look at me, all I had to do was get $1M in stock from Cisco!"
No disrespect intended for you; I'm sure compared to some of your friends you lived frugally. The point I'm making is that to duplicate your living standard today, very few comparable developers would be able approach your level of savings.