Changing the view to Final does not remove the markup from the document, and
if you send the document to someone else then they will be able to see the
markup. To remove it, you _must_ either accept or reject all of the tracked
changes and comments in the document -- either one by one, or all at once
(click the down arrow on the Accept or Reject button on the Reviewing
toolbar).

If you want to keep the changes active, then make a copy of the document,
remove all the markup from the copy, and send the copy, keeping the original
for yourself.

The reason Word defaults to opening in the Final With Markup view is
precisely to prevent you from sending out documents from which you have
forgotten to remove the changes -- which might be embarrassing or worse.
There is an option (in the Security tab of the Options dialog) to turn it
off, but you do that at your considerable risk.