Wasn’t there a requirement to keep a small amount for routing fees (which should be less than that, I know)? 

I don’t remember now though; probably was just dumb, lazy or both 
https://media.tenor.com/s85UU1L28CwAAAAC/lol-omg-lol.gif 

 Oh yeah there must’ve been. I just checked my wallet and I still have 14 sats in there 😂