Season 11 wasn't a strong season and it is a good thing the series came to an end.
The Gallaghers always had many opportunities to turn their lives around and always ended up doing something stupid to prevent it.
The viewers probably were hoping for a more flashy ending that involves weeks of crying after the episode aired but this is not FRIENDS, it is SHAMELESS and so the writers, who were exhausted towards the end, made sure they stick to the script and delivered a decent ending that might not be the best for TV.
The Gallaghers always had many opportunities to turn their lives around and always ended up doing something stupid to prevent it.
The viewers probably were hoping for a more flashy ending that involves weeks of crying after the episode aired but this is not FRIENDS, it is SHAMELESS and so the writers, who were exhausted towards the end, made sure they stick to the script and delivered a decent ending that might not be the best for TV.