I was never a competitive COD player either. To this day I'm just OK at it. My k/d ratio is still < 1 (or "negative" as people oddly say)
Other than sporadically playing video games with my children, I haven't played regularly since I was a kid.
But that's me. I wouldn't presume to know best for anyone else - why do you think your experience is applicable to others? Is someone binge watching Netflix really better for you than playing video games? Death scrolling TikTok or Facebook? Collecting beanie babies?
I think there are a lot of things people do for varying degrees of mindless entertainment but for some reason video games are singled out as particularly bad.
But I don't think it really stops there— I would hope that my spouse, siblings, and close friends would feel comfortable enough speaking into my situation if they observed me falling into a pattern of behaviour that looked to be self-destructive. We need checks and balances in our lives other than the just the extreme end of having to stage an intervention when someone's bad enough that they're hitting rock bottom.
It was fun! Yeah, it was a lot of fun. But there are real things I could have accomplished by balancing that time with other things. I have good memories of COD4, but I still can't play piano.
And 1440 hours isn't even a lot compared to what some people are doing.