Oh wow Ian how unfortunate. Its funny almost, people of our age come here stating they want to meet someone yet we put up all sorts of barriers to stop that from happening. BUT-- the good news is... it may seem hard but those ladies who have "excuses" are doing you a favor by not wasting your time, energy, and emotions. Don't give up - that special lady is probably a few clicks away.
Question - those ladies who said no to a relationship, would you consider just being friends. Someone to talk with every now and then, maybe grab a coffee or brunch.