The holding company is just for limited liability, as well as being incorporated domestically in the US simply makes it more familiar for banks and the target companies to work with.
So should you? I think everyone should, just for the consolidating and separation of assets. Being able to transport a name and address that's not yours. (ie. you can be in Miami partying all the time, while your super serious Delaware holding company has the super serious Silicon Valley office address and upholds the stoic investing brand)
The US doesn't have those specific tax benefits for doing it, but there are many others, which may be enhanced by the holding company, but not necessarily.