Whats the matter with thriller movies??

In the case of thriller movies I ever seen, I got many questions from those movie..

1. The murderer or the killer use a mask sometimes..why??they are all shame with the ugly face..or they have feel not ‘camera face’ as a murderer in their own movie….ummm I dont know, what happen with the ‘mask type’ here…if they need a murderer actress with a beautiful face and camera face.. im still here.. ahhahahaha…however they don’t need to lavish the budget for just making the mask… :D

2. The murderer always running so slowly..slowly means that they have to chase their own target but it feels so SLOW…why??the target always trying so hard to escape but it isn’t the same look with the murderer as the situation they have to ‘makes the target dead’…ummmm give me a break…is it caused some murderer have an uncomplete organ included BRAIN…ahahhaha so they haven’t a synchronizing soul, mind and body…ahahhahaahahah..

3. Some murderers have complicated disease..like a cancer,heart disease,skin disease,etc…so…why they still have a ‘killer instinct’ beside they have to think the ceremony of their own funeral..ahahahahahaha…hhh