Call of Duty franchise has sold over 188m units as of July 2014

[Carl]

Samus Aran said:

Macdonalds has bad food and yet people come back to that as well.

Define "bad".

The point is it does the job its supposed to do, better than any other game on the market. Thats why it sells more than any other videogame, every Year (aside from GTA5 that is).