Agreed that it's minor in most cases
. But plenty of people take 15-21 day holidays, and reading emails may well be the last thing on the priority list on return. Which would make having left by the end of 30 (calendar) days impossible.
Even a fortnight's holiday would probably prevent it.
My broadband basic info/help site - www.robertos.me.uk.
Domains, site and mail hosting - Tsohost
Connection - AAISP Home::1 80/20. Sync 65273/13554Kbps @ 600m. BQMs - IPv4
I suffer from them