Can't say I really warmed to Louis on first glance. We'll have to wait and see how he develops.
Two and a Half Men was originally about that, 2 men and a boy. The boy now grown up and left the nest made the show more like 'Two Men' without the 'half'.
I've been watching this show since it began and am still a big fan although I think it's become shorter of laughs in recent times.