I have a rather different opinion from many people when it comes to micro-stakes. I don't think having X times the buyin matters all that much when the buyin at a table is only $10 (for example). So what if that represents a large portion of my total roll, or even all of it? It's still just $10.
Granted this isn't good practice for BRM when my roll is large enough so managing it takes on substantially greater importance. However, if you don't have enough game to win another $10 quickly if you go bust, or to be confident enough to put up $10 from your pocket, then you have more important things to work on than BRM.