It's not the words that matter, but the body language, the look in the person eyes, when the person says something. If he nervously ticks with his fingers, or get red in the face at something shameful. The smile at your joke accompanied with that one guy who laughs with a funny sound, but is accepted anyway. The disbelief in someone's eyes, or a subtle wink to compliment you.
I do not like a text only world. Me and my friend are both big geek late 80's kids who got both worlds. We love computers and spend a lot off time with them, but we spend once a week physically together to hang out, even though we have our own private chat server.
This body language/physical presence and in context lack there-off with phone convo's might be a big part in it all..
Another example I have;
When I had to work abroad for a few months, I texted my girlfriend almost daily, but it was not until I came back, the very first sight and hug at the airport, that I felt first contact again, even though we technically had contact all the same through chat. It mattered none with one hug. I think this is not just because we are romantically engaged, and I believe this factor is relevant in every type of relationship to certain degrees.
tldr;
body-language is where the magic lies