I like the song, but I thought the video was boring.
YG can't really sing... he puts a lot of effects and autotune on his voice to hide it. Some of the his vocals though are harmonies with IU. Honestly, those I liked. In the live performance they did together, the harmonies sound a little off key, though compared to JM it's nowhere near as bad. I'll take a slightly off key harmony set to a live band over JM's chaotically bad voice any day. Not the best, but it could be a lot worse.
Here's the translation of the lyrics:
https://genius.com/Genius-english-translations-agust-d-people-pt2-ft-iu-english-translation-lyrics
It's best understood if combined with the lyrics of People from D-2, and with So Far Away. As usual his music is deeply personal.
YG has a lot of negative feelings toward his childhood. A lot of resentment toward so many things. I think he's looking at where he came from, and where he is now though, and realizing he wants to settle down more. When it comes to music he is very selfish and it does effect his relationships (he has been open about this). I get the impression from his third verse that he has passed up on a lot of opportunities to have a meaningful romantic relationship because he's put his music first. YG also really likes money, not in a spoiled, cruel kind of way, but more in a "money provides security" kind of a way. You grow up without something for a significant portion of your life, and then you get that thing, it's hard to give it up. Believe me, having gone through the exact same thing, I understand it. I think he's also coming to terms with the fact that he's lonely, and he's responsible for that loneliness. There's a lot of self-examination and wisdom there that I appreciate.
That being said, yeah, the lyrics are repetitive. IU does have a pretty voice, which is shown here, though I also would have liked to hear her more. YG does tend to favor a voice that's there for effect, there to sing one specific part, but he takes the lead with the rest of the song. He does this with everyone he works with, like it's one of those artistic habits.