Why doesn't anyone try to fix the problem of sending e-mails without
attachments?

All that is necessary is for the computer to search the e-mail message for
words such as "attached", "attachment", "attachments" and notify you "Do you
really want to send this without attachments?" if there are no attachments
attached.

I hate the times when I refer to an attachment and then forget to attach it.

There you go make a million bucks, and notify me when I can use this feature.
Thanks,
Jeff