But so does the federal government, doesn't it?
I benefit from being a U.S. citizen, namely passport, so there's at least some justification. Otherwise I'd be stateless, which is a nightmare classification to be.
I garner no benefits not being in the state vs another one. I suppose if I care local elections that's... it?
Pretty much unlikely you'll qualify the first year. But after should be easy enough.
https://www.irs.gov/publications/p54#en_US_2020_publink10004... https://www.irs.gov/publications/p54#idm140194641073648
South Dakota is famous for this but a few other States are also popular. From the State’s perspective they are generating a bit of revenue from someone who otherwise consumes no resources, so it is a good deal for both parties.
Like another poster said, you can go to South Dakota for literally a day or two and fulfill their residency requirements, but that is not likely to be enough for tax purposes. You should be employed by a company registered in that state; you should have a physical mailing address in that state (e.g. a PMB); you should file a USPS change of address form listing your new mailing address as your official address and change your registered address with service providers like banks and telecom; you should avoid spending more than 182 days per year in any other state as another poster mentioned; etc.
Is this a requirement?
I don't fill out COA forms anymore because the idiotic assholes at USPS hand out your new address to stalkers, harrassers, spammers that knew your old address
If you want to avoid people knowing your address, I would recommend using a "private mailbox" (PMB) service and making that your official address. This gives you an address that is recognized as a physical address by most services and USPS but basically functions as a mail proxy: they will receive your packages / letters and forward them to another address you provide them. If you are concerned about stalkers or other hostile people, you could have the PMB forward mail and packages to a P.O. Box or commercial mail receiving agency (UPS Store et al) which is not where you live. Escapees and America's Mailbox are examples of PMBs with receiving facilities in South Dakota.