Why do cars have a on and start option

What is your question?

I just want to know why on the spot where you put your keys to turn the car on why is there a on and start option? My boyfriend asked me to go turn the car on and I went to do that then he comes out and freaks out cause I turned the car to on and not start.

What makes this problem better or worse?

No

How long has your 2005 Kia Sorento had this problem?

No