Yep. Written conversations lack the live, non-verbal feedback that one gets face to face, so it makes sense to spend more time thinking about it to make sure that you convey what you want. I also prefer meeting people in person. It makes stronger relationships.

My problem is different. If I fail to respond to an email within the first few hours, I'll often forget to respond to it at all.

It's not that I'm mulling them over, it's that they get overridden by a new flurry of messages. It's hard to keep up.

I'm like that too, except I don't have the "flurry of new messages" excuse. More often, if I let it go when I first see it, it slips out of my mind. It's like "Well, it wasn't important enough to respond to the first time, what's different now that makes it important enough to respond to?" (regardless of whether it actually is important enough to respond to).