There are so many reasons, but just to name a few:
We have a custom control panel that was actually built for Ark. You don't have to be a computer expert to set things up just the way you want!
We automatically check for updates to the Ark server software, and your mods, and will immediately install them for you when they become available. You don't have to do anything!
We automatically take backups as you play! You can roll back with one click! (Backups must be setup, and cost 0.50 per 5 GB space used.)
Our support answers all questions within 24-72 hours -- other providers will sometimes make you wait for days!
We don't cap your CPU, or charge you for more if your servers grows in popularity. We constantly monitor all servers on our platform to make sure everyone always has the system resources they need. This means no lag or "rubber-banding" for you!
Our network is really fast -- seriously, try it!