Isn't planting roots in a city that you'd claim as a home base the opposite of how you'd like to live as a nomad? The entire point of being a nomad and living a nomadic lifestyle is the geographic freedom you have over your life. Especially with technology being what it is, you no longer have to worry about planting roots in order to get or maintain a job. There are plenty of remote, online options to apply for. You don't have to worry about maintaining friendships or important relationships while you're on the road. Your closest relationships are just a text, an email, or a phone call away. So why in the world would you be bothered with planting roots or claiming a hometown city? There's actually a good reason: you need a place to keep your most treasured belongings.
You gotta keep it somewhere
Let's suppose that you decide to become a road-based nomad. This means that you'll travel from one city to the next via a van or an RV. Think about the size of these vehicles, and you'll quickly understand that it would be impossible for you to fit your belongings into one of them. Even if you previously rented a studio apartment, you're not fitting all of your cutlery, your furnishing, your clothes, and your accessories inside of a vehicle designed for your most basic of needs, such as sleeping and eating.
This being the case, it makes sense that you'd rent a self-storage unit in the city where you're traveling from. Alternatively, you could rent a moving truck to haul your belongings to your new home city, store your belongings there, then start traveling again when you're ready.
Don't worry, your belongings will be safe
If you've recently made the decision to become a nomad, you might be concerned about leaving your belongings behind in a city where you don't live. But if you think of it, how often would you visit your self-storage unit if you lived in the same city? Probably not very often, yet you'd trust that the property managers would make provisions to guard the property and keep everyone's belongings safe.
Take inventory of what you'd like to store. Do your belongings require special climate control? Might expensive treasures require that you purchase an insurance policy? You can visit the property. Also, you can look for online reviews of the self-storage facility. Keep in mind that the managers want to earn your business, so they'll do everything to keep your belongings safe. Then you can continue to enjoy your nomadic adventures on the road.