I cannot tell you how important it is to get and own your own domain name, but I'll try to describe it:
- It's an intellectual property (IP)
- It's an asset that you can either build an online or offline business on it; or sold to another party who's interested in it
…plus it's often really low cost, ranging from USD 9 to 15+ per domain per year (separate cost from hosting).
I personally have 30+ domain names that I've registered (and hundreds I've ignored and not registered) because not only I've so many ideas/potential businesses in my mind, I would really hate to “lose” a domain name that I love.
If you have any domain names that you have thought of before, check it out below. If it's still available, quickly buy it and keep it first. If it's already gone, then be creative and tweak the name, until you get a suitable one.