Does anyone else out there feel alone on this planet?

I recently embarked on a project which turned out to be a little beyond my economic and psychological means. I investigated it however because I wanted to invest in skills which could have paid dividends later on. The thing which came home to me at the time however, was how utterly alone I was. I have no supportive partner, no interest from my family even though they are secure and comfortably off themselves and would talk in the abstract about how everyone should have the chance to develop themselves. I abandoned my plans even though someone opened a door of opportunity to me. I just didn’t have the resources to pass through it with the confidence needed to carry it all off. I felt really hurt and bitter about this at the time, but I am back to the drawing board now and I feel secure in myself and strong again, so I don’t need anyone, but isn’t it a shame that there was noone for me when I needed them? The irony is that I am prepared to accept I will have to take care of my parents when they need my support. I don’t feel bitter about that and I wouldn’t dream of walking away, but they are remote figures who are not involved in my life: something which they have chosen. Does anyone else have this experience? Why is it so?