Well, I done did it.
I went and sold my original BB.  Of course I still have/use/need my colored BB, but found that since getting my colored one, my original just sat, and sat, and never saw any use at all.  While I did sell it for slightly less than I paid, does that make me a flipper?  I bought it FEB '14 and kept it til now?
I thought to keep it as a 'backup', but really do BBs ever die other than through misuse?
		
		
	 
Well, first off, congratulations, Peter!  And no, you're not a flipper.  Not at all, in fact.  
It's definitely a personal preference thing though, whether to keep or sell it.  I use both of mine equally, pretty much every day.  I carry four (delrin) tanks, each with a different of my favorite liquids, and bounce around throughout a typical day.  So, for me at least, the perfect number of BB's to own is two.
For some, that's one too many (you, being an excellent case in point) - while for others, it's laughingly low (see FB for details).  
In my case, the only reason I haven't shark-jumped a RPG is because it would be one too many for me.  I love the color, but that's simply not enough...