There are some situations where you'll wish you had one.
If you’ve been wanting to try Linux, whether because you’re worried about privacy in Windows 10, don’t like Microsoft’s “ignore what users want” approach or want to stay out of Apple’s walled garden, ...
With Windows 10 going away soon, many of us are considering jumping ship to Linux. Thankfully, you don't have to ditch Windows entirely to start using Linux; running two OSes is easier than you think.