Hi,
I'm new to this site. My apologies but I'm not big on formal introductions. I have been an expat on and off since 1989, first moving from the NYC to Germany for a couple of years and then on to Taiwan for 5 years. I'm back in the states now but will be moving to London in the Fall; my husband is already over there since Jan. He's an int'l banker so moves around... :-) He's originally from Germany and we met 20 years ago when he was working in NYC, where I'm originally from.
Okay, in regards to parents acting out and being upset? Tell them to cut it out. You are an adult, not a child anymore. Don't buy into the guilt tripping and manipulation. Put your foot down. The sooner you do this the better. Of course, call them and try to get home once a year for a visit. Have them come over to visit you. Sending cards and photos are all good ideas as mentioned by others.
btw, there are not as many freedoms in the states as everyone thinks. I had more freedoms in Taiwan. This is a brainwash that America is the best country on the planet and the most free. What it is is a very convenient and beautiful country. Just my opinion from living in two other countries, having traveled to 4 other continents and extensively to 22 countries, many of which I traveled to up to 6 times for long periods of time. There are countries that have higher standards of living than the US, eh?
My husband and I are world road warriors and feel blessed to have this life. Your parents should consider themselves blessed that their child is going to experience another country and life.
Best smiles