Whether you realize it or not, as a single guy, you're generally looking to impress women. And with that comes some possible side benefits. According to a study in the British Journal of Psychology, researchers organized a computer game asking volunteers to donate money to a fund that benefited the common good. Men ended up donating more when they were in the company of attractive females than they did when they were surrounded by other men. By that logic, not being tied down to anyone makes you a better philanthropist... right?