No real problems in Debian Sid...

[Wheelerof4te]

I ran Sid for about a month and half without major problems. One day, my desktop completely froze 5 mins after booting on 4.16 kernel, Chromium stopped playing Youtube videos and Wayland was having micro-seizures every 10 seconds.

It wasn't fun. It was ugly and frustrating. Stable is the King.

[kedaha]

Even running a stable web or email server, where even a miniscule error can throw a spanner in the works, requires considerable administrative efforts especially during initial configuration but, imagine running sid! No real problems? You can bet your life there would be and that the system would break every so often.

It's advisable to run stable for production, i.e., for getting work done. The purpose of sid and testing is not "to get the latest software" but to track development but it's far better in a case of Shiny_New_Stuff_Syndrome to backport the stuff to stable.

Stable is Debian's core distribution and the main reason why folks depend on is it's stability,security and reliability. But each to his own.