Sure Google Slides can be used for presentations, but you're missing the boat if that's ALL you use them for. Check back often for new ideas and ways to use Google Slides.
Any skilled presenter knows that an interactive presentation is often an effective presentation. With Google Slides new Q&A feature, you can now better engage your audience by allowing them to submit questions and vote on them during your presentations by providing a URL. Another added feature is the ability to use your mouse as a laser pointer. These new features turn a regular presentation into an engaging, interactive experience.