Wherther you are running a business website or blog, a contact form is necessary. It helps you to connect with prospective clients, answer queries, and collect orders.
For WordPress, you can find out several contact form plugins to create forms easily. They may be enough for beginners. Minimum settings, limited customizations, and built-in forms. Since the target is limited, new comers can go with the free contact form plugins.
That is not the case for growing businesses. They need professional-quality forms with advanced features and integrations to target different types of customers. Forms should be unique and give them full control over the design.
Some times, you need to create surveys and polls to analyze the latest marketing trends. User registration and lead generation are some other purposes of creating forms. Unfortunately, free contact form plugins won't allow you to do those things.