A few examples (I am making them up) 
I have seen them all.
After visiting and taking the tour, and talking to a professor in x department, I feel sure that x College is the best fit for me. because… (answers the prompt directly)
It was a hot summer day and as I shyly entered the admissions office for a tour, my hand was sweating as I slowly turned the door handle to the foyer. (tries to be creative and takes a long time to get to the point)
When I was a kid, I played with Legos for hours at a time…mention how Lego play resembles computer programming in that they both require binary choices. Leading into “x University offers the kind of CS program I am hoping to attend” etc. good use of creative metaphor with a twist at the end, also answers the question
I think a lot of kids approach essays with the second approach and would be better off with the first. A few can pull off the third.