When I was hired for a wedding, 95% of photographs I made were with the Canon 24-70 f 2.8 lens. I used a full frame Canon Mark camera. I used a reflector for natures light and I had a Quantum flash system with Pocket Wizards. I did have backup stuff but never had to use it. I had other lenses but I also had an associate photographer at every gig and she sometimes would use some of it.
Now I use 50mm lenses 95% of the time.
Works for me.
I make photographs as a return ticket to a moment otherwise gone.