I just found it easier to work with. Some might find express easier, but that is just my opinion. There are also companies using hapi in production. Walmart use

I just found it easier to work with. Some might find express easier, but that is just my opinion. There are also companies using hapi in production. Walmart used it and worked on black friday. Modules is not a big problem since there are lots of node modules out there. One could even say, why use express when meteor has a bigger community? They have modules, etc.