I think it depends on the scenario, a streaming stick or box, 16gb can be considered too much (in point of case, me and my fire tv cube). Phones and tablets, if you take a lot of pictures and/or download a lot of apps even 128gb is not enough to keep up (and i been with 64gb or less until about a year ago, talk about pain, just from excessive apps) but i feel 256~512gb for phone and tablet storage is starting to become the better balance, though some still prefer 128gb, anything under 32gb is a crime now a days though, hell even below 64gb in most cases. laptops and desktops depend if you use your laptop a lot and its your main computer and/or dont have a desktop or rarely use it, then 256gb roughly is a decent soft spot, least for me. However if its your main pc and again probably dont have or rarely use a desktop then might wanna hit at least 512gb to roughly 1tb because it can fill up fairly quickly, depending on what you do. Desktop for me at least i have 6tb (2tb boot drive and 4tb game drive) its insane how "few" games i have installed and how much of the 4tb i have left. Desktop is really where high storage volume is key because it will eat it up, least in gaming cases, idk about other scenarios.
