Your question was: What is he trying to say~.
Well maybe he is telling the truth and ment just what he said. I who either email or call and thank e for being up front with you.At least he did not leave you hanging!!! That is something! LOLOr you could what and see if you hear from him. I probably would have said more in my reply, but that is me, and I am still single so... LOL!..
Wow, honestly that email is WAY WAY more than 99% of guys will ever give you! That is sad, but true! I'd be happy with that email. It sounded genuine to me. Your hours are obviously insanely long and grueling! I'm sure you understand. It does sound like he just wants to think over stuff and manage time with his family. Obviously, this is not in line with what you want and your needs, but you're going to have to a) accept what he wants and be friends with him b) DONT be friends with him and be nothing at all. If you meet someone else who has more time for you, then great. But I coldn't be mad at someone who wants to manage time with their family and works 52 hours/week and expressed all that to me (instead of the usual guy who just ignores you and disappears with no explanation whatsoever)...
Basically he wants to stop dating. The only person who knows whether or not he was telling you the truth is him. Since you have nothing to work with but this email I would hit the delete key and move on the best you can. If you stay friends who see each other every now and then, but not dating, then your feelings may have a tough time reconciling the situation and your healing may be delayed. But..only you can make that decision for you. Based on his assumption of I love you's and rings, he may have over estimated your feelings for him and may be a little embarassed too...
Take what he said and leave it at that. At least, like the others said, he gave you some form of goodbye. As far as a friendship goes, it might be a little difficult to move to that point now as it would only cause more confusion, but if you live near each other it might be unavoidable.Your response was good also. No call me's or when will I see you, etc. He's not a young guy and if he's not ready, he may never be. Believe him.Be happy for the time spent together, be happy no sex involved, and be happy with your life.
~Dare to believe in yourself~..