If you never have needed to ask for advice then you aren't qualified to give it. Remember advice you receive you may need it later. People who give advice usually know what they are talking about. There are always exceptions. There is always a reason.
Nothing is forever.
Overestimating something will only make you disappointed. Love is the best thing you can experience in life. Love is excepting people for who they really are. Enjoy life while you have it. You can't change the past.