How do you look for things? If you are like 80 percent or so of the population, you will rely on search engines to find what you’re looking for. Or would you go to each social network you are on and use their search tool?
Without a website, your business or page is a lot less visible to people outside your social networks.
A website gives you freedom to influence how you appear in search results. You can use SEO Best Practices to help your site rank higher for the keywords your audience uses. You can use schema markup on your site to display rich results like summaries, reviews, recipes, or whatever’s relevant to your niche and your audience.
Social networks are losing credibility thanks to data breaches, privacy concerns, and fake news scandals. On other hand, people trust web search and company websites. So even if you have a strong social media following, a website can boost your credibility.