That funny stuff is back at the end of your e-mail. It comes out on my mailer as a file full of unprintable garbage. Before you decide to send your resume as an attachment, consider that many employers and resume listing services are requesting that you do not send attachments when responding to a job ad via e-mail.
Attachments are a relatively new concept, implemented only a few years ago.
They may carry viruses. They are not supported by all e-mail programs. Too How an e-mailer stores an attachment will impact how much work is involved to go and find it, open it, and manage it. Some e-mail programs store them in a mail file until you access the attachment, where a copy of the attachment is then place into a temp directory. As a Microsoft Outlook97 user, I never have to track down my attachments.