Two days of effort would get you to a basic presentation polish (privacy policy, terms, about, and more elaboration on the financial / payment side of things), along with a PO Box.
Many end users either buy this argument or simply parrot what they see others doing (or not doing).
There are legitimate reasons for privacy but as a general rule if you are a business it's a big mistake.
On this page [1] it states that you will also "protect yourself from telemarketer". Well I am here to tell you (I also run a registrar that doesn't even offer privacy btw) that with thousands of domains under management we get perhaps 1 or 2 phone calls per week. And if we were to use a google voice number that wouldn't even be an issue. (Yes, thousands of domains ...)
I simply don't want to put my home address on the internet, and have no office address to use.
I don't know if it seems alien to you, but it's an honest question. The first thing I did when I got Internet access was to put my contact info in my finger banner. When I got web access I put up a "home page" with my contact info. It's been there since, and I think it's a feature that people can contact me if they want.
When the physical threats started I had to get the police involved.
There's also the issue of pseudonymity. If I work on a lot of different projects, I don't necessarily want everyone to know about everything I'm doing with everyone else.
This doesn't mean I ignore NDAs and share sekrit stuff - I most certainly don't. But I've freelanced in the past, and some employers have strange and unrealistic expectations about how much exclusivity they're buying.
This isn't hypothetical. In the past I've been told "You absolutely can't work for anyone else if you freelance casually for us."
Really? How about "no"?
Also it's better for free speech. I can express opinions freely with online privacy. I don't necessarily want those opinions to be associated with - say - a startup I'm creating.
Generally, contact info is a problem. It's actually mandatory for UK companies to include a business registration number and an office address. (I'm not sure how many UK devs know that.)
Problem is, when you can incorporate in Delaware or Kiev, physical contact details start to become meaningless anyway.
My rule now is that contact is easy if there's a networking, customer care, or community-building benefit. But privacy is a fine thing too.
Being able to pick and choose is best of all.
Your primary address probably has traces of your real identity all over the Internet, including orders from eBay and others, so an adversary could dox you in an instant anyway. Especially if you use it for work related things. So why not make it easy to contact you?
I agree that it's not desirable to have a home address on whois as a (once again) general rule. Yet many of our customers do that and we've never heard of any particular issues that they have had.
That said, if you are working as a business (and it's unclear if you do any business consulting or programming I did look at your website quickly (very nice btw.)) in my opinion it pays to get a PO Box for $10 per month.