Electronic & Hydraulic Shifting (Di2, Ui2, customisations)

8bits: Clean it with a hose and put it away...

It's the zero maintenance thing that appeals to me.

Go for a proper ride in the country side in inclement weather and you have to run your chain through a chainbath, then re-lube it, or you increase the wear rate by about a bazillion percent.

WIth a belt drive you just lean it against the wall and you're done.

Proper winter bike should have an oil bath chain case to avoid such issues.
In carbon :-)