Anti virus software?

I've had ESET security on my laptop for the past 5 years. The license is expiring and I'm not sure if its worth it to renew it or not. I originally had my laptop for college but now that I've graduated I only use it for personal use- web browsing, games, documents, etc. I dont use my laptop for porn or to pirate files or anything. Is security software something that I actually need?