It's not for everyone. But I doubt you can do all these hobbies in a single day or even week. Many can be rented or bought in smaller "travel" versions, however.

(Reminds me of an aside, in that every single sport has very specialized gear (on purpose) now. You can't be caught dead wearing basketball shorts when cycling, even though they are just fine, outside the tour de france.)

But still, if you've got a big house there's no immediate need. It's when you have to move that you'll wish for less.