mini-moan: buffer-underflow

There is a new trend lately when it comes to watching videos on the internet. I've already moaned about the various annoyances associated with consuming media via the internet. But the one that has really annoyed me the last few days are video players that only buffer while playing.
For some reason my super fast fibre optic broadband suffers slowdowns on occasion so watching videos online is like trying to watch your neighbour changing through a slat in the blind eating soup with chopsticks.
But that shouldn't matter, I'll just pause the video and wait for it to buffer then I'll be able to watch the whole video without interruption. Hmm, it doesn't seem to be buffering, my connection must be really slow now, I wonder what happens when I hit play. WHAT? Now it starts buffering. WTF!!!!!! (this time three just doesn't cut it).

Has anybody realised that this defeats the only point of buffering? In my mind buffering means to store data before it is required so it would seem obvious that you buffer while the video is paused instead of making me suffer 30seconds of video, then some buffering, then 5 seconds, then buffer and on it goes. Why can't I just pause the video for a minute and let the buffer fill to bursting?

Perhaps I am just too wise for this world, if you need me I'll be lying on the train tracks.