There is a real reason behind using whois privacy (which I unfortunately discovered a little bit too late). And that is specifically to avoid receiving spam. I am used to spam, this is part of my sysadmin tasks to eradicate it before I even see it.
One thing I haven’t quite been used to is mail spam. I received a nice letter from the UK today with a lot of writings in Spanish telling me that for the 20th time this year, I won the lottery. Woohoo, no need to work anymore. I decided to scan it just for fun.
So there is a lesson in all of this, use whois privacy.