I think of GAS, at least to me, as hand-on-history. Sort of like the american pickers go about and find new things that fill in the gaps of their interest in motorcycles and americana. They don't hang on it though. Or maybe they do and we just don't see that.
Simplifying is important. As someone also interested in Christianity, we're advised not to store up treasures that rust/mold, etc... No problem; I tend to collect things that are more likely junk than treasure, and I don't have multiple barns of it. Probably similarly meagerly effective is my interest in Thoreau; who had a very meaningful and enlightening time by not having much for possessions. Reminds me of college, but without the people and the city life.Things like making time for walks was good for his sanity.