Current obsession with multiple discs

I swear on so many boards in the last month or so there have been at least half a dozen people asking either if there will bemultiple discs/why they think there should be multiple discs

In games like Skyrim I can understand, there is a chance that RPGs can have more than one, but on games like AC Revelations, GTA V and hell even MW3 I can't understand the thinking. Why on earth do people think that they would have more than one disc?

Is that people think more discs = more content? Or do they just not know that games like Lost Oddessy, FFXIIIand LA Noire had multiple discs because they had an abnormal amount of of FMV sequeneces, Cutscenes, Audio etc. which obviously take up tonnes of space

People ask about games like GTA V, AC:R, or MW3 because there have been several games this year on the 360 that have been on multiple discs that aren't that long. Games like Dead Space 2, or Rage.

It has nothing to do with content, it's just that games have gotten bigger data wise. They're having more trouble compressing it all down to a single DVD these days.

I'm not overly fussed either way, really.

I used to work in video games retail and it used to drive us crazy when a game had multiple discs as they were a nightmare to fit into our regular storage system.

Apart from that though, as a gamer I don't really have a problem with changing the disc, yet as mentioned earlier, it would be good if we had the option to install the data from disc 2,3,4 etc so it could all be played directly from the hard drive -- they're big enough after all! :)

Rage is a massive game which comes with 2 discs.