What is the purpose of stopwords?

I've just started learning about fulltext indexing and searching in MySQL and I've stumbled upon this list containing all of the "stop words" used in MySQL. I cannot understand what is tue purpose of these stop words, since this list contains a lot of actual words that I may want to search for, such as if I had a post on my blog titled "My first hello", if I searched for any of these words I wouldn't get the post since all of them are in the list. Can you please explain to me why these are what they are and what can I do in this situation because fulltext appears to be so useful but I find these stop words as such a bummer. I must be missing something.