Salaries are the STDs of the workforce: you have fun getting them, but they can stick with you forever. Your current salary will follow you to your next job if you don’t ask for more. You’ll want to make as much as possible for the work you do therefore by negotiating you’ll get a higher salary, a better benefits package, sign-on bonus, etc. The hiring manager expects you to negotiate and by doing so it will show that you know your worth and are willing to fight for it. The worst they can say is, “no,” but if you don’t ask, then you won’t get it