Nice physical collection - I'd suspect some though have larger digital collections which aren't as nice to show.
I guess my digital games collection means nothing then and yet I'm happy I saved money and collected as many games as I wanted, physical doesn't really mean something to me anymore and it's clearly the same for a lot more people on different platforms, doesn't make their collections any less decent, only those that love physical bu loathe everything about digital would think near that.
Well I wont get into the debate about dreams and reality, but I do have a similar sentiment to the OP regarding physical copies of games when it comes to the point of view of a collection.
While I can certainly find sentimental value in digital things (I have many pictures and other things I cherish), when it comes to videogames, like books and movies, I prefer to have a tangible object when it comes to my collection. I still have all my former consoles and games as well tucked away somewhere.
One example I can give you is my copy of Majora's Mask.
For some reason I always really liked the boxart of that game. Here's a picture. (Not mine)
It's nothing extravagant. But for some reason it speaks to me. I've had it on display on one of my shelves for 15 years now. And every time I glance over at it, it brings back a little bit of the feeling I had when I played the game as a kid, and the memories I have associated with it. Including the store I went to to buy the game, the snowstorm outside, and how much of a hurry I was in to get home in order to play it. And seeing it there, knowing that there's a physical copy inside still in mint condition, I like that. And now 15 years later, I have a copy of the 3DS remake sitting next to it.
In a similar sense, I like to be able to see and touch my collection of games, movies and books, among other things, and for people to be able to when they are over at my house. It wouldn't occur to me to tell someone to take a look at my Steam library as I scroll through it, while I certainly have some games on there that I like as well, such as Skyrim. Mainly thanks to Steam summer sales. When I look at my history of purchasing digital games, there tend to be a few factors involved in order for me to prefer them over a physical copy. A balance of price, convenience (can be a game I play a lot, like Street Fighter 4, and don't want to switch discs too often) and if I feel ok with leaving it out of my physical collection.
So it's more of a sentimental reason than a practical one.
Likewise, the video xl-klaudkil made probably wouldn't have been as interesting to watch if he was just scrolling through some lists.
People have different values when it comes to these things, and I like said, I have many things I cherish that are digital as well. But for games, I'll continue to prefer buying physical for games I really like.