I have a handful that I literally never touch. I think they could go away and I'd never notice. I like to have specific tools for specific jobs, but I also like a good multi-tool.
I think I agree with Frank on this one... I have a terminus zeus (the multi-tool) with about 5 different barrels. 223 for plinking, 6 dasher for prs-type comps, 6CM, 308, 6.5 creedmoor. chassis, stocks, different optics and I can quickly outfit that action for just about any purpose I need.
Now that all being said, if the world is ending and I need to choose only one precision rifle, it's my AIAT in 6.5CM all day.