Many people utilize Amazon Prime. In fact in most e commerce research for Purchase, Amazon is the first place people search. The reasoning HUGE inventory (Hard to find stuff that you like it is there) / Easy of use (order and it shows up in a couple of days) / no going someplace to buy something returns are EASY.
From what I can assume by the post you have made over the years, I think you are over 60 (I sincerely apologize if I am wrong). So you probably like to see, smell, touch before you by. Younger generations not so much.
Plus the streaming music and TV (TV buffers a lot for me for some reason and it is frustrating as hell), are nice value adds as well.
I'm 56, but I've been buying online (including autos) since the late-90s and I've been on the Web since about '93 (and playing floppy disk-based video games starting in '87...counting King's Quest (Sierra) and Leisure Suit Larry -- hahahahaha! -- among those games ;-), with a presence in the old Usenet community before that.
Computer-wise, I've had 'em all. A Tandy TRS-80 ("Trash 80" LOL!), an Osbourne 1 (paid $1,500 for that in late '81 and dumped it in February of '82 for $500...lesson learned), Commodore 64 and a Commodore Amiga 1000, a TI-99/4A (bought that on special at the Navy Exchange in Newport, RI in '82), a Timex Sinclair 1000 (ugh!). I got serious (so I thought) with the IBM PCjr I bought in '86 when I was stationed in the Norfolk/Tidewater, VA area. That one, I kept around for a few years. Then of course moved to MS for the OS (we all went google-eyed at Windows '95 and tried to install it on our unit's computers, which got us all pretty much screamed at by the command IT guy).
I was around for BASIC and C-Base, even. We used C-Base to put all our records online, for a time, way back in the day.