I will probably catch some flak for this, and it is only a personal opinion, but I honestly don't understand the fascination with devices that sacrifice so much

I will probably catch some flak for this, and it is only a personal opinion, but I honestly don't understand the fascination with devices that sacrifice so much external functionality for the sake of fractions of an inch/a few ounces. I'm not trying to knock anyone, but is there anybody here that has a true need for this type of "advancement"? There may be some legitimate reasons people have of needing these changes, but it is not immediately apparent to me what benefit this provides to people.