I have an S8, with 64gb and a 16gb card.
Ariund half of the card is taken up with old music, and I have 38 GB free on phone .... The rest is apps, and pre-installed crap n OS.
Pre-iphone 3gs, we were all happy with a 250gb lappy n 3/4 GB on handset (if lucky).
I think, as has been said,.... The more you have, the more you want.
Being brutally honest.... How much space is taken up with crap (cos you can) and media you no longer want/watch/listen to?
In old days, I saved it all, cos was difficult to replace (now it's drag n drop via lappy, or just do direct via torrent etc).
Plus, all my photos (taken on phone n previous handsets) are online in a couple places, plus what I have on the phone..... Prob a good ⅓ is crap and one time used screenshots.
Google photos gives you unlimited storage of photos n cideos., So only need temp on handset.... Half the time, it's being bothered to remove n tidy.up, or fear if you did, it'll vanish from the cloud.mind, I have a few cloud accounts via various accounts (Samsung, Dropbox, Google photos to name a couple). So tho, do have older pics nowhere else.
I think we could all use n need less, but cos it's free (unless you pay extra for handset with extra space) we use it.