I enjoy buying collector's editions for specific games that I enjoy - thought it does depend on the price point, size, and its limited factor. Recently I have purchased the Wolfenstein 2 CE, Mafia 3 CE, and Assassin's Creed Origins Gods edition. Wolfenstein 2 was on sale for 72 USD + free shipping, AC Origins was on sale for 90 USD + Free Shipping, and Mafia 3 CE was only 30 USD. All had interesting factors to them.
Though there are times where a CE looks cool, but turns out to be a giant scam. Marvel Vs Capcom Infinite was a perfect example. Thankfully I decided the game wasn't interesting enough for me to purchase it and I am glad I made that decision.