What is the point of capitalizing all the first letters of each word in your sentences, in all honesty?

To try and make it look “cool”? Is it your thing to just capitalize each word’s first letter? To try and make all your sentences look like the title of a book? Not trying to be a douche. I am just genuinely curious because I never understood why some people do this. Does it not take more effort to hit the shift key to capitalize each word/switch to the uppercase keyboard on your phone?