It'll have been ten years for me too, bur I'll pass not gonna lie. I still love my case despite it not being up to the same "standard" that modern PC builders hold aesthetic up to. I've got a corsair c70 for both my personal and workstation builds, it may be tacky but I love them!
My friend. I'm using a think center tower case from lenovo that I bough out of an office's closure sale. The hard drives are zip tied to the frame because it only has one drive bay.
No don't! Sleeper retro PCs are back in style, I wish I was joking but I'm serious. Pack that ten year old case with as much power your poor little wall outlet can provide!
I didn't mean to say that products manufacturers produce will stop having RGB, yeah it's here to stay. I meant people's unique builds, stuff people post to /r/rate_my_pc, or builds.gg. Custom built and pre-built PCs are going to be slammed with more and more RGB until that case is brighter than the sun. PC parts are never going to get as cheap as they were 15 years ago I'm afraid.