You know, it's not fair. Women are told they have no future if they've had too much sex; men are told they have no future if they've had too little sex. And both statements are lies.
Be kind to others, do good work in your community, adhere to the tenets of your faith (if you are religious), find meaningful work. I am only recently in my first relationship, and I'm 33 years old! As the great Leonard Cohen put it: "Every heart, every heart to love will come, / but like a refugee."