It is good to write those emails to H but you are right not to send them. I think that down the line you would regret it.
All your interactions should be from a place of strength. Showing hurt and attachment will show you as being weak and may make you feel weak for having done so.
This is not a tactic to be more attractive to H (though it is more attractive than falling apart), but more so for you to hold your head up and not REact to his shiitt. Don't give him any reaction.
Furthermore if there was any doubt that you did the wrong thing by moving out, you know you were right. Protect yourself.
You are not weak. You have gone through a lot and you are hurting.TThis makes you human, not weak.
Google excel at life. There is some great stuff there to read or listen to.
Treat yourself to something TODAY.Buy yourself a littlepleasure if you can or just make time for a little pleasure.
Best wishes
R 25 years M 14 years S11 & S13 Working on it alone since Oct 2014 M in trouble a lot earlier (~2 years) Feb 2016. 1st R chat in a yr. Next R chat Aug'17 Still together