I think it's more important a lens is being used for its intended purpose once in a while. A task which of course might turn into a challenge if the lens volume is big enough 
Which is why, for me personally, I don't have any lenses 'just to collect.'
I either have studio macro lenses (that I use), field macro lenses (that I use), as well as field landscape/telephoto lenses (that I use) ... all manual, save one ... and that's pretty much it.
Am considering a collection of AF lenses (3 to be exact) to be used for situations where manual lenses might cause a missed shot (mainly evening/night situations photographing people), where AF will just nail it quickly.
Other than that, I have no use for owning any lens 'just because' ...
That said, I still say
a gun safe is the best containment method.
I have tried cabinets, closet shelves, Pelican cases, etc.
None of them has the convenience, or total security, of a gun safe.
Not by a country mile.
Using large closet (silica gel) dehumidifiers within the safe, these also render machinated humidity-control obsolete.
If you have a much larger collection, you can get much larger gun safes.
FYI, all gun safes have adjustable shelving so you can adapt to your particular lens sizes.
You can also buy additional shelving to better-suit photography gear over guns.
Gun safes store everything: Tripods ... monopods ... huge/long glass?
They
all fit and can be accommodated.
Even better, the largest safes not only can store more cameras/lenses, but they typically
also have internal electrical outlets (so those who insist on machinated dehumidifiers can deploy them within the case).
As a bonus, larger safes also offer greater fire protection (they can withstand more heat), and in the event of a fire, they can withstand the higher level of heat for a much longer duration.
Finally,
by adding a door-mounted sleeve, you also have storage for all your adapters, filters, remote switches, and other accouterments.
No other solution is comparable ... not even close (IMO).
