Right!? I definitely did not think about this as a kid because I just saw him as a parent and they lived in a nice big house.
I never saw him as a parent though. I can't tell you why - I just didn't.
I guess...he's a jingle writer, right? So he's in the music business and supposedly has money? Maybe it's just one of the things we're supposed to suspend disbelief about.
also kind of have to admit that I've never put this much thought into Alvin and the Chipmunks... lol
He was broke and living in a crappy house when the Chipmunks' mother left them on his porch when they were babies. He took them in, discovered they could sing, and made a bundle off them and bought that nice house.