I use lightroom. It's great in terms of learning curve and editing. BUT it's SLOW. Slower than just about every other editing software, and it get's slower with every major release. What it needs is a COMPLETE rewrite. To actually use Open CL in it's core, rather than the crappy GPU utilisation that has been bolted on top of inefficient code.
If you are using a lowish resolution display, sure it's fast enough. Once you start editing 36+mp files on a 5k screen it is hell. Other software simply performs the same tasks much faster.
In the below video, some of the issues have been fixed since LR6.2, but it's still a dog in terms of performance relative to other software.
With regards to FCPX vs Premier. Premier runs like a dog compared to FCPX.
This is the problem with adobe. Too much legacy code but they have a monopoly for the time being so don't need to do anything about it. Why should they? they don't need to convince people to upgrade anymore, people pay their subscriptions regardless.
Personally I hope the below company can deliver a compelling alternative to Lightroom, as the product seems to have the potential to be a lot faster. It just depends on if they get the usability aspect right.
https://www.on1.com/apps/photo-raw/