While many of my friends and I are not adverse to changing a battery of the non-removable type, it's mostly for those that want the ease of swapping. There's a few other reasons but here, it's a non-issue.
The bigger issue is one of finding a replacement. For example if you got some Xioxol Z32 LTE phone you may never find a replacement battery. Lesson? If you plan to try to stick with a phone past 2 years go with the herd.
What's the advantage of a battery that you can remove from your phone? What would you prefer, removable battery or non-removable battery?