I'm a hyper-productive person, but productivity for productivity sake is literally pointless.
All productivity is a means to an end. You are producing something, by definition. What is that and why?
While I do have an "emotional itch" to work on "something" most of the time, I don't leave work to go do more work just for the sake of it. There are specific things that I want to produce because it makes me happy. If I don't work on those things, then it's not that I feel guilty, it's that I feel a void in my life.
In the past I have had so many hobbies and not enough time to dedicate to them all. I would get bored of one and move to another. Some might view that as recreation, but they were always making and producing something. For the last couple of years my wife and I have been performing magic as semi-professionals and as I find myself feeling less and less enthusiastic about modern technology after 25 years in the industry, I'm starting to see a scenario where I retire from tech and we take a major risk and go all in professionally. That can't happen if we don't put the work into it today. Not that you or anyone else should, but there's purpose and motivation behind the decision to produce that.
I don't live for the sake of my employer and I'm not motivated by money (at least not at this stage in my career, I have enough). There are things I want in my life that I will never get if I don't work towards them. Sometimes I am too tired, and that's a good signal that I'm not resting enough. But every single "productive" thing that I do, be it for my employer or myself, has a motivation behind it. No one should feel pressured to produce something just for the sake of producing (unless they are living parasitically off of the efforts of others but that is a whole different conversation).