Each family is different. My family is very affectionate, and no, that doesn't mean we really are not close to each other. We hug, give puppies, etc. Maybe it's different for girls? My dad gave me a puppi every single day and I would give puppis to both my parents and tell them I love them before going to sleep. I'm 30 and I still do this every time I talk on the phone with them, I say "I love you" before hanging up. I see nothing wrong with it. Just cause you grow up in an affectionate environment doesn't mean you go out and start being affectionate with everybody else.
If you issues with your spouse due to how affectionate they are with their parents ... well I don't know what to say to that. Perhaps you should look at the relationship between the parents to determine what kind of environment they were raised in and what their expectations will be post-marriage. My parents always held hands when they would go out. So I grew up seeing this and I don't see anything wrong with it. Because that affection was extended to us kids and we grew up in a really loving environment and are each others closest friends as well as family.
That's true...it all comes down to different methods of dealing with each other in different families.....
But what might cause a problem is when a husband has totally different upbringing than his wife's.