I enjoyed watching it, but I felt like he was a bit too vulnerable emotionally. For someone who has lived for thousands of years, always being proud of being the most powerful, and having suffered so much, I think people convince him too easily to change and be kinder and to adopt more human ways.
However, I only watched around 2 seasons and a half. That's my view of the tendency it was following when it was coming out. I don't know if this trend continues to the end.
But I also agree with you in that it's bulky enough to fill you up, but not enough that you get annoyed or bored and close the tab. It's a very good series and I quite enjoyed watching it when it came out. I'll probably go back and watch it again or watch the rest of the chapters.
The later seasons are a lot better in my opinion. I do agree about the critique in terms of his emotional vulnerability, though (speculatively) in his defense, he didn't spend all that much time in the human realm. But he would have a lot more experience than the other visiting celestial beings that are very out of touch.
And that emotional vulnerability is also one of the factors that makes it interesting for me too so that's... Yeah.