Yes, because this is the important part in making sites. In other words, this is the way to communicate with the users by using this. Why web hosting is really important? For example if you're running an online business it is one of the perceptions in the site. And it is also good for security purposes like the emails, or other accounts that we people do. As i said earlier this is the part of the site, when it says they maintain the needs and wants of the customer like us to continue to do our doings in the site. Hence, they will support us whenever we have a problem regarding to this situation.