system
Given the following post, respond as if you're commenting on Reddit:
human
[Alvin and the Chipmunks] Is Dave from AatC only in it for the money?

He obviously can't stand being the guardian of the chipmunks.  He's been injured, had relationships ruined and I'm sure the constant stress is horrible for his blood pressure. 

Dave is probably on many medications just to deal with the nonsense he has to put up with.
gpt
Essentially, the chipmunks saved him from unemployment. He acts out of gratitude, despite putting up with all their antics.

In addition, Dave feels a bit of fatherly responsibility over the chipmunks. He sees them as children who never were taught how to behave, and wants to try and make them better people-chipmunk creatures.