The main reason you need to automate is that it gets rid of simple tasks and frees up your time. However, there is another good reason to automate your marketing. Sometimes, automated programs can do things better than you do. For example, an automated analytics program can take in a great deal of data and deliver relevant metrics to you. If you were to analyze this data yourself, it would not only take a great deal of time, but it wouldn't be as precise as the analysis a formula or algorithm can do.
In fact, there are some tasks that you can't do on your own. You can't do them at all without automation. An example here would be email marketing. You simply can't build, maintain and market to an email list all by yourself through your usual email address. You need an automated program to carry out email marketing.
Getting Started with Automation
If you've shied away from automation until now because of the technological barriers, don't. It's very easy to get started. Start by automating one task at a time, and then once you're comfortable and seeing results, move on to the next. Soon, you'll see how automation saves you time for more important things and makes a huge impact on your business growth.