There are striking physical and weight differences, at least in my experience, between a categorically large and small phone, but only really noticeable if you have access to both phones on a regular basis. Using any one phone you will get accustomed to its characteristics rather quickly and tend to discount its short comings because you want to like its form factor.
I’ve always thought the 8 Plus is for me, which it still is, but handling the smaller 8 made me realize that’s not the only form factor for me. Both fits my use case rather well, both form factors are pleasant to use and easy to adapt to. I am surprised at each’s differences each time I switch from one form factor to another, and has made me appreciate each so much more. The beauty of competition, choices and options as a consumer is a wonderful thing.