In the last 24 months Lightroom and Camera raw has gone from strength to strength. Its amazing how many time saving features that are present there now.
I'm a bit like you, not happily paying the subscription fee, but paying for it all the same.
I've used Affinity on the iPad, and its decent, but I don't see it replacing my desktop workflow any time soon, as I am simply not prepared to "unlearn" so many years of Photoshop.
Call be stubborn, but there's a return on my time invested there, which one day might pay off, but not at this stage.
My favourite feature in lightroom is the subject detection and multi-part masks for people, it saves me so, so much time! What's your favourite feature?