In the case of having two lines I'll say... sure, why not try and have fun.
Wife just ordered her's last night... 256GB Space Grey. 11/3 pickup.
She previously got the 6 Plus 128GB 3 years ago and no issues whatsoever with it so she got her moneys worth and probably will with the X too.
It will be an interesting phone and at $1400 it's steep but made me think...
In my household, we've gone through the Original iPhone, 3GS, 4S, 5, 6, 6+, 6s' as well as a couple of 1st gen iPads, iPad Airs, iPad Air 2, iPad Pro, MacBook Pro, MacBook Air and for most part they have all run for years without issue and many are still running as hand me downs. Gotten our moneys worth on all of them and worth every penny. Earned our trust.
With that said, hope the X will be just as good.
This is probably a foolish question to ask on this forum, but are any Note 8 users taking the plunge on an iPhone X? I have two lines and I think I may bite the bullet and pre-order one tonight.