[aheckler]

IIRC Finder has an option to delete files from the Trash 30 days after they're put there. I just enable that option and forget about the Trash completely.

[crazygringo]

You clearly aren't regularly deleting tens of gigabytes of files at a time... ;)

[kbutler]

You can generally permanently delete with one action - but be sure you want to!

GUI: select item(s) and Option-Command-Delete

Command-line: rm -rf folder-or-file-path (or srm to securely remove)