Quoting cfronk: Maybe no blame would be a 180....just a letter saying I love him, need him to do a,b,c to restore our marriage to a dating level, then close with examples of how he has shown he's capable?
Yeah, I think that would be a lot better. The first thing I noticed was all the "You's" and a lot of accusations and stuff. If you have already written all this stuff to him before, then it's time to do something fairly short, positive, and loving.
I've done the note thing before - long notes and especially one containing any sort of blame and such are really big no-no's.