I grew up alone and happy being alone. I seldom make friends too but If I do, I'm pretty certain they are true. Why? Because I am not confident about people.
Years back, I had several experiences that made me lose my faith in humanity. Naks! Lol. But seriously, it's primarily the reason why I only have few friends. When making friends, I am skeptical and rational for some reason. You can't easily get my trust. It's pretty difficult for me because even if I wanted to trust someone, I always tend to doubt that they are just using me and eventually will leave me. It is based on experience that I can't easily trust people.
Once again, I'm in the very same position - unsure. Invested time, money, and effort but I still fear that one day, all these are just wasted. It's a bit different now though. I'm now always ready to get hurt. So hell yeah, use me as you please. Bring it on!