That's how it goes, bud. You "own" the name/address, that's all. Sort of like a trademark.
One day you will spend even more money to actually hire some geeks to provide you with bandwidth to make a website that connects to that name/addy.
And perhaps one day you will very seriously consider just saying
"Screw it", and let the domain name and the website fade away, and save a couple hundred bucks a year because WTF, you're way too dang busy with actual paying jobs to muck around keeping the website updated and weeding through/answering endless bullshit emails anyway...
In all seriousness...
if you wanna make and sell stuff directly to your clients...
having an actual website is vastly over-rated, and frankly a whole heckuva lot more trouble than it's worth.
The maker's membership on this and other forums are a much, MUCH better deal right off the bat, and that generates a boatload more business than any website that you can't afford to pay goggle or bang to promote to "reach" people that don't give a hoot anyway.
If you want to retail other people's stuff, that's a whole other ballgame.