A personal website is your ultimate method of self-expression in the digital world. There are other ways to express your accomplishments and passions. The most popular one is LinkedIn, but it is so... homogenous and professional.
It is very difficult to inject any sort of personality in your LinkedIn profile. Now, sites like Instagram might allow more creative freedom, but it still cannot replace a personal website.
As for the personal websites, it takes a lot of time and effort to design one yourself. Sometimes, you want something that is quick but still looks good! That way, you can focus on creating the content for the website and not worry about the design. As a result, I have created a portfolio and personal website template for anyone to use.