I actually have end-game goals when it comes to owning books like these. I'm surprisingly very picky when it comes to books I enjoy, and there will be a point where once I check all the series I want off my list my buying will slow exponentially.
But what about all the new books that are constantly coming out? And what about the books that you hadn't heard about before or were off your radar but then somebody made you realize that it's something you'll enjoy? Buying books will never end. Admit it. You're stuck with this disease forever.
But no, I get what you're saying. I suppose I'm in the same boat. It just doesn't seem that way since I'm pretty new to the comics hobby and am still in the very early stages of accumulating all the things I want.
Also, regarding Locke & Key Vol 1 HC: http://www.amazon.com/gp/product/1600102379/?tag=neogaf0e-20