Err you are answering your own question 
But anyway why would you want such a large storage card?
If you lose the card or it gets damaged or corrupted you'll be really down in the dumps losing thousands of images 
I did answer my own question as a courtesy for other photographers that might be searching for answers to the same question.
and why would I want such large card?
My camera has 35mpix and single average RAW file about 80mb. I'm shooting raw+large jpg. So that fills the card pretty quickly.
So let's say I go for a 2 weeks holiday to Asia and will do some shots there, and I won't have the option to upload or download these images, so I need to have fairly big storage to be able to shoot.
Plus if I needed to do some timelapse or videos, I would need not just one but a couple of such cards.