Pasted text doesn't inherit existing format

See this screencast:

http://screencast.com/t/ZDZkYTk3YmQt

Is it not awkward that I'm pasting plain text and it doesn't inherit the existing format?  In my experience with document editors the pasted plain text always inherits the existing format it's pasted into.  If you agree, is this logged as a bug or shall I do the honors?

Thanks.

Aaron