What would you think of me coming to the conclusion my life is a waste?
That's sad. Why do you feel like your life is a waste?
I am not going to have a child
I understand that you want to have a child. However, not having a child of your own yet does not mean that your life is a waste. You should consider your other goals and accomplishments before thinking your life is a waste.
All I want is to be a father.
Being a father is good thing but there are so many more things that you can do in your life rather than focus on something you can't be. You should focus on other things that make you happy and that you have accomplished.