.....your cat throws up but you stay seated on the sofa because you just have to finish the row.   He looks sorta innocent, doesn't he? Don't be misled.
I was in the middle of a row of lace, knitting the Rowan Birch shawl, and I heard Nigel letting go of his breakfast.  Do I get up and clean it up, and possibly screw up the shawl, yet again? I'd already frogged it once.  
No.
I figured...we have hardwood floors, old hardwood floors, what harm will it do?  So I finished my row. 
What would you do?  
And how do you know you're obsessed with knitting?