Bulk

Yes, bulky yarn works up fast...

...but how soon do you really need that slubby ear-flap hat?

Bulky Openwork Poncho

Maybe for some, but not for me:

No, not even if it does have little balls on the ends of the fringe. 

Bulky

Bulky yarn has its place in the world of yarn-craft, without question. 
It's not right for every project, but it definitely has its good points. 
For instance, it works up so quickly! 

However.  
At some point you cross over into the realm of the ridiculous:

Fortunately for the rest of us (who like to point and laugh), high fashion doesn't know the meaning of the word "ridiculous".