It would be nice if you can explain why.
Anyways,
The point of playing is earning cubelets and points. ( for fun as well )
Techically you can buy a rank to get Vanity points....However if stone rankers can just buy them, it will take away one of the points and speciality of buying a rank. Donors may feel scammed.
It's like Player A played for 1 year, has 5000 points.
Player B played for a day, has 10,000 points.
If you are dedicated enough, you will get lots of points in no time.
These are just rewards and "encourages" you to countinue playing.
Against the EULA also...
-1