Thing is - at 30kmph that's 5 and a little hours - it's a long time to be thirsty. Even if I 4 bottles to make it 3.6 liters, I'd still be a liter short.
Of course one could carry a camelbak and be one of the cool kids but I don't have the street cred to get away with that.
And all of this on the off chance that after hels I'm not looking around for other stragglers who are just as likely to stop ....
But if one of you lot cruises past me with his camelbak pipe dangling from lips as moist as the chick in some dated liquifruit ad, I'm going to be miffed.