I like to do things myself. Ask anyone who has gone camping with me. My wife loves talking about how I'll ask her to do something, and in just seconds, I will take over for whoever I've asked to do it, and do it myself. "Honey, will you go make a fire?" . . . "Never mind, I'll do it." or "Sweety, will you get the campstove out of the car?" just seconds later, "I've got it."
I don't know what it is. Maybe it's a control thing. Maybe I don't trust others to do the job that I think I can do better. Maybe I just enjoy trying things and doing things by myself. I do enjoy trying things. Maybe I just like things do my way, and if I don't trust you to do it my way, then I'll do it myself. Again, control and trust.