I don't understand the logic of keeping a Kb you don't like and has features you enjoy playing.
I know what you're saying but let me explain.
I have no specific reason to own any of my keyboards. I do not perform live, I do not entertain or gig like you guys here are all professionals, I am in awe of all of you. I just love music.
I am a simple home player really and I love keyboards. I play by ear and self taught, when I get it right, it sounds fantastic and it thrills me. My dad is the professional I help him when he needs and what I know. He is in his late 70s, he is trying so hard to perform like he was in his 20s, and he doesn't understand what age does do you...hey we are Italian, nothing ever goes wrong... and we can handle it.. apparently?
I am not a performer (I wish I was), but I love music. I loved the keyboard from the first day I saw that casio tone pt1? thing.. heck, my dad had the ELKA 30, that's where I learnt to play originally as a kid. That organ is always will also be in my memory !