I was brought there as a teenager, and I missed several things initially.
Friends, activities, being able to function as a student.
There were others but less relevant now what with the internet.
I stayed from teenage years to late 20’s. Always I was not happy there but that is because of the progression, not doing well in school, not graduation from college, delaying the army, etc. I was not having any luck with Shiduchim either. I wasn’t American enough for the Americans, nor Israeli enough etc. Although I may have suffered from lack of image etc.
However, now that I have been back in America over 25 years, I would like to go back however I would need to ensure the job situation.
I also think, that the society is a very nervous one in many respects. Although you have great people there, there are also not so great. I know because I visit every year.
I would need an income that would allow me to leave for a break every few months, to Europe, probably. I don’t need to come back to America any more.
The life there can be very stressful.
So at this point, to be honest barring a financial miracle, I will wait till I retire.
Also my wife refuses to consider the idea so that will be a problem as well.
The reasons most don’t move I think is that they feel very much at home in the society they are in.