If you want to be found on the net, then you absolutely need a homepage. If you don't have your own website, then you are missing out on a so-called sales channel, especially if I have my own company.
Or you have just started up with your company, who should know? Hardly anyone still leafs through the good "old" Yellow Pages&, nowadays everything runs through the medium of the Internet. Besides, you run the risk of losing customers to the competition in advance, the competition is huge.
As a private person you can also maintain your own homepage. If you have certain hobbies, for example, then you can gladly share the related information with the public. Many people like to write. Such lines could also be recorded on this page.