This is exactly the point of my question.

Given all the complexities behind the scenes including flight scheduling, human scheduling, supply chain coordination for cleaning, catering, fuel, slot timing, luggage systems, airport systems, check-in boarding processes, +++ ,mixing newer platforms with really old frameworks on legacy architecture, hundreds of airlines across multiple countries, sharing real time inventories across multiple platforms (how old is GDS again?)...

From the comfort of my Lay-Z-Boy in under 10 minutes, I can book a flight that leaves in a few hours on 4 different airlines (including airlines across or outside of alliances) across 3 different continents flying over hundreds of different airspaces and there well over 99% chance that I and my checked luggage arrive on time and as planned.

Maybe it's because I remember paper tickets and preprinted cardboard luggage destination tags, but i'm impressed it even all works.