The only steelbook I purchased intentionally is Final Fantasy 12 zodiac edition for the PS4, because the art is so much nicer than the standard release. Any others I have are incidental- that version went on the good sale first, it came in a collector's edition that had other stuff I want, etc.
I assume the fascination is due to the idea that metal is inherently stronger/better than plastic, so a metal case is better for your games... without considering any of the problems a metal case could pose for media storage specifically: rust, heat, and conducting electricity all come to mind. This is ignoring the extra effort in keeping the case nice since it's not readily replaceable and far more easily damaged.
For me though, the biggest issue is size. Steelbooks are just a bit bigger overall than a standard case, so that means you can fit less of them into your given storage solution. I don't think there's enough good from them to warrant spending the extra space to have them.
Not many steelbook fans on here I guess, lol
Personally, I love them. I think they look cool. I won't pay much more, but I'd pay and extra $10 at most. I have quite a few, movies and games.
I've never met a single person who buys steelbooks because they are better protection, so pretty sure people aren't fascinated with that. People that do like them, like them because they are something different...they are just nice. Also, no extra effort to maintain a steelbooks condition...They aren't so fragile I have to specifically pamper them or anything. Never left them out in the rain...so no rust, ever....never popped 'em in the oven...so they don't melt or burn my hands when I touch them.….never stuck them into an electrical outlet....so no issues with conductivity. So all those 'problems' are really inconsequential....Maybe rust if you live like in a tropical environment, but outside the one guy in this thread I've never seen or heard of a rusted steelbook. I'm sure it does happen, but it's not common.
Outside of 2 PS3 steelbooks which are 360 sized, I find all my steelbooks are the same size as the cases of the games they represent....I've never had to adjust anything storage wise to accommodate any steelboons (outside those 2).
I've noticed this gen seems to be offering an increase in steelbooks being offered as bonuses, still giving you the general plastic case as well.