You might think that you are safe from attack because your website is small and you are a nice person. Chances are, someone will attack your site anyway.
They may do it to extort money. They might contact you and promise to stop the attack after you pay them.
It may be politically motivated. You may be targeted simply because of the country or region your business is located. Or it may be provoked by some of your content.
It may be business-related. Perhaps your competitors are trying to gain an advantage. Or a disgruntled customer may want to cause you harm.
Or it could simply be done out of boredom. Someone with technical skills may play with botnets because they don’t have anything better to do with their time.