Modern/Fantasy language

[Mirai Gen]

This is something I've been kicking around for a while.

Basically I like fantasy, but I really dislike fantasy language, IE, I prefer when dialog is quick and concise and modern. A normal sort of conversation you'd hear everyday between people (or read on the forum) minus all of the references and swear words and such, I think works just fine in place in a fantasy novel. But I'm not sure if I'm alone on this one.

An examplay:

"Well, don't worry about it. We'll deal with it tomorrow."
Fantasy ified turns into
"We shan't worry about it. We will see what comes tomorrow."

This is the kind of thing I mean; the sort of contractions and casual speak like "Deal" and "Well" seem to make flowier dialog.

I mean I could always go the easy route and explain it away in the story by saying that the more civilized areas of my world speak in one while the nomads like barbarians from the north or the sand dwellers don't, but I don't think it matters how I explain it if it bugs enough people.

Anyone have thoughts?