(Note that not all of my place looks like this...just this particular office room... lol)
I like to see and enjoy my collection, darnit!! I'll just never understand the appeal of striving to find that perfect piece, only to seal it up and file it away, taking it out on, say, Saturdays. But hey, that's just me.
If you'll notice in the piccies above, the environment is protected from sunlight [via light-blocking curtains, which also help save energy!] and from extreme changes in heat/humidity via AC - in other words, protected very basically, but very effectively. I've done a fair amount of archival research over the course of my collecting career, and find that these are the easiest and best preventative measures one can take to protect this sort of artwork (and many other forms, to be sure), and fortunately, they're easy, straightforward things anyone can do.
For the most part, other [purported] preventative measures are largely a waste, whether we're talking about chemical sprays or dips or various forms of super-'spensive lighting and mounting methods - and in my experience often based on questionable chemistry in the quest for negligible benefits. Even worse, some can end up causing far more harm than good. I steer clear, personally.
IMO, the four fundamentals are: no UV, no humidity, no heat, no acid. Easy breezy.
Keep sunlight away, and frame archivally (read: with archival mounts/mattes & UV glass), and you'll go far.With respect to line-fading, the biggest enemy is of course light - it's like the printing of books, or worse, newsprint. And of course, as some have said, it depends on the process: printed line work vs. painted. In short: absolutely, your cel(s) can be framed without any sort of apocalyptic resultant damage to the artwork. Simple, intuitive precautions (like displaying in a room with closed curtains and not 10 windows, or not displaying just under flourescent lights) will go a long way. And, of course, you'll be able to enjoy your artwork right out in the open.
