You are entitled to your opinion... and you know nothing of other people's situations. First, the processor and the camera are significantly better. Then there is the case of large families (me, wife, 6 grown kids, 6 spouses, 17 grandkids) who pass phones down rather than everyone always buying new. There are plenty of reasons to upgrade, should we choose to do so. Then there's the matter of "it's my money" and the fact that I have the ability and option to upgrade just because I can.
Of course, the issues that I listed in the first post caused me to decide to return the 8+.
Again, you are welcome to your opinion... but that opinion does not hold for everyone.