I have used LR since the original beta test programme. I never took to Photoshop (I had v 6.01!). But there is now an issue with Adobe products I'm not prepared to tolerate: the holding of my years of edits to hostage via the subscription model. So, I'm stuck with the last perpetual licence version 6.14. I use this for my back catalogue up to 2019.
For photos later than this I have escaped the proprietary software treadmill by moving to Open Source: Ubuntu Linux O/S and darktable to replace LR.
It has taken a while for me to get the hang of darktable. It is a complex product with little done to dumb down the user interface - in some ways it reminds me more of the complexity of Photoshop than Lightroom. Also, in the period I started using it, it was going through a major revamp of both its processing modules (shifting to a scene referred model) and its UI (the addition of major customisation options), so every 6 months something major changed. It's settled down now and I have refined my copy to a simplified workflow and a highly customised UI.
There is a tendency by those who don't use open source to dismiss it as some kind of freebie and therefore feeble alternative that doesn't provide the professional features of "proper" software. So wrong! darktable is an impressively powerful product once you figure out how to use it. You shouldn't really do feature by feature comparisons between products because that leads to dismissing a product when you find something missing or different from what you've grown used to relying on. Judge products by what they can do rather than what they don't do or do differently. Often it's just a case of learning a new workflow.
And darktable is an impressive product. In many ways more powerful than LR 6.14 (and even what I have seen of the newer versions). In particular, it has some features that have transformed the way I work. 1) The masking tools - present in just about every module 2) The module re-use feature (a tool like curves can have as many separate instances as you want working at the same time and in combination with the masking tools you can apply as many curves as you like to different parts of the image. The same goes for almost every other tool (local contrast, sharpening, noise reduction, tone equalizer, contrast equalizer, color zones etc etc). In some ways, these two features working together are a bit like Photoshop layers in an entirely non-destructive raw environment.
The only real weakness I've found is printing. Linux printing is tricky. You can pay for a program like Turbo print that sorts it all out, but I prefer to swap over to Win/LR to do my printing.
Oh dear, this sounds a bit like an advertisement for darktable. No matter, it's free.