your posting is quite accurate. I was neet for nearly 3 years. Mostly in isolation. Found a job again in september and I have been there for nearly half a year now. It still feels tedious sometimes to get up early and actually do something the entire day. Sometimes I also feel like quitting again because I am so weak. I mean, the job itself is comfy and the people are nice to me but I just feel like nothing matters anymore and I might die as well tomorrow and nothing would be different. Pay is also okay for me but I have nothing to spend it on as I lost joy in pretty much all my former hobbies.
I am not sure if this phase will end eventually just as you described. I mean, beeing neet has ruined me completely. It is like tasting a drug and then always longing for the feelings you felt on your first hit. Forever hoping you will experience it again. It was not that exciting to be neet but I really enjoyed the freedom and carelessness I had. I could oversleep and spend half a day in front of the screen and still have time to go for a walk in the park or work out. When you spend your entire day with work or work related stuff you never have the time for anything and even if you did, you would most likely be too tired. Then on weekends you sleep until 11am, go to a fast food place for lunch and half the day is already over.
NEET life just felt like one giantic vacation. Like when I was a kid and we had summer vacation just without ending after a few weeks. I would love to be neet again but I also understand that it would not be good for me so I will stick with this job at least for a few years. Might also save up money for my next neet vacation.