I can't say what's superior for everyone, but I've found that I enjoy gaming more when I'm dedicating my time to a few games I really love, rather than trying to play everything that even remotely interests me.
I used to do the latter, but found myself getting overwhelmed constantly. I would beat one game, have two more release while I was playing that one, beat one of those, have four more release while I was playing those, and on and on. Eventually I found myself buying games just to put them on my shelf or have them be forgotten in my digital libraries. Maybe serious gamers don't think much of it, but to me it was just stressful, and I eventually asked myself why I was buying games I would never have time to play.
Nowadays, I don't bother buying games unless I plan to play them right away, and I find myself a lot less stressed with this hobby as a result. I'll play each game until I find myself not getting any enjoyment out of it anymore, which, for games I really like, means I'll play it until I've exhausted every bit of content, and sometimes even past that. If you look at my Switch library, you'll see 160 hours in Zelda, 200 hours in Xenoblade 2, 60 hours in Valkyria 4, and ~40 hours in anything else I have on the system. I'm sure there's a ton of great games I'm missing out on, but at the end of the day, I find I vastly prefer playing a few games a ton rather a ton of games the bare minimum.
So long story short...Depth for me.

NNID: Zephyr25 / PSN: Zephyr--25 / Switch: SW-4450-3680-7334







