Then don't throw them - easy!
Im affraid i dont understand ...
How is advice "dont do that" provided to person who just listed reasons why he "ALLREADY dont do that" related to anything usefull? O_o
I'm afraid I don't quite get it... Are you perchance implying that you posted something useful in this thread?
Healing aside, throwing potions effectively lets any PC cast Haste, Invisibility, Sleep etc... None of these effects require concentration, saving throws or even line of sight.
Yeap, it can lead to a lot of unusual situations. And you're not restricted by your classes, for example you can make everyone in your party invisible just using a potion. Fun.