Jeremiah's teeth....
perhaps from a combination of the Amish's poor dental hygiene and his smoking but yikes! He must come a close second to Abe for the most unhealthy diseased natural teeth of all the Amish featured on the show. So I'm sure his breath cannot be very fresh, plus he always looks greasy/unclean. I can't for the life of me imagine how such a pretty girl as Carmela could be physically attracted to him. They must have a very strong emotional bond to overcome so many icky factors to his personal hygiene.
I also am confused how Jeremiah expects to take a more active role in his children's lives if he has now moved halfway across the country from them to Washington/Portland...