It's the marketing "logic" That annoys me."people don't want big intimidating jugs of protein, the arent sure when to take it or how much. We do all the work for them, they fill out our questionnaire and we will send them the exact amount they need in exact serving sizes and tell them when to take them".
I personally love having a cupboard full of tubs and the flexibility of choosing dose and flavours. Another argument for was that with the standard commercial tubs you don't know if it's spiked and what exactly your getting (these are Arnold's words). So athletes who are drug tested prefer the sachet system. My argument would be, how do you know sh1t ain't spiked before it's put in sachets.
The only benefit I can see to this system is if your traveling a lot and want any easy way to carry protein serves.