If you don't want it then don't use it. I personally don't want it either but I'm sure there is someone out there who would like to use Facebook Home. You can easily replace homescreens on Android, you don't need your device rooted or anything like that.

I'd say that having the choice is the more important factor here. I'm not sure how "Well someone people are not going to like that" is a compelling argument for not having the option in the first place.