Ian Hines on how he got to only using 44GB on his MacBook:
As I mentioned above, I didn’t get to this point out of some coordinated effort to use less. Less is not more. Enough is enough. And for me, this is enough.
For reference I use 159.24GB on my MacBook Air, just a testament to what I said from day one about what a ‘normal’ computer user needs. If you are using more than 200GB of storage you are not in the majority.