I think you're just thinking way to hard.... XD You've obviously watched to much t.v.. :animesmil
Holding hands and all that mush.
A relationship can be whatever you make it.
Though, some emotional attachment may be good.
For example, when you feel you're worst you've got someone to understand and help you out.
Don't want to sound mean or anything... But you kind of sound like a cold person. But then again you don't have to know every single thing about a person and all that crap.
Like others have said you probably just not ready for a serious relationship.