Great comments everyone. I saw an opportunity for a new topic and jumped on it. I believe our current collecting/accumulating habits are individually shaped by various experiences/circumstances that influenced our interest in this hobby over time.
I think mine was heavily influenced by my generation and era of introduction into the hobby. I started collecting as a 10-year old in 1987 during the peak of the baseball card "stock market era". Beckett Monthly was the bible back then. It'd often feature articles about how card collecting was a good educational tool to teach you about investments, stocks, accounting, finance, business, etc. People really thought that sports cards would someday put their children through college, or provide for a good retirement plan.
Now, I know that perspective might be different from people who started collecting in the '60s when packs were still 1-5 cents, and card condition and value wasn't a really a concern, and fortunes weren't wasted on them. Many people from that era also experienced having their collections thrown away by their parents only to find out years later that the cards were worth a "fortune".
Then there are the people that started collecting in the '00s, where parallels, inserts, short prints, and other gimmicks keep people buying packs like casino gamblers looking to score big.
Many people from my era of new collectors got burned big-time, and can probably still feel the burn on their behind from money wasted on fire-starter cardboard. I left the hobby for 10 years, but kept those same business principles when I came back to it--without the false illusions of value for cards that were supposed to be collected for fun. That's probably why I talk about cost efficiency in collecting today.
I'm still buying packs; they're just 700-card packs of modern cards instead of 5-10 card packs, I guess. Vintage still makes sense to purchase individually, or in lots. Wax from the late-'80s to early-'90s is cheap, so I'll grab those from time to time too. As far as the 2017 Topps insert sets? I'll let you collect them, and then I'll buy them back from you in a couple years deeply discounted after you've felt the burn from investing a horde of dollars into a worthless product due to some type of gambler's fever. People end up quitting the hobby because of the guilt they feel looking at their worthless piles of junk. It ends up being a rude awakening for some people. You know it when you see it because they're selling large lots of random incomplete product for deeply discounted rates just to get rid of it. It can be sad.