What are the disadvantages of putting more oil in cooking?

Oil contains unsaturated fatty acids beneficial to human body, but at the same time it has high heat, which

The fat content is 99.90%

Almost saturated. The content of fat is very harmful to healthy people and people with diseases. Therefore, even if it is non-animal oil, enough is enough. It's not perfect.

Oh, and if you put more oil, your daily expenses will be much higher.