New people and new experiences are the same. They both have the opportunity to teach you new things and give you new insights that can improve your life. The thing is, you have to be willing to give them a chance. This is where many people go wrong. What is a fair chance? It obviously depends on the case, but I find it really helps to give things a proper go to truly test if they are valuable or not. I guess you do risk losing some valuable time, but more often than not I'd say time spent meeting new people or in new experiences is time well spent.