You will be bothered by social and bureau systems which runs opposite of what you are seeing in US. Those who have not been to US think you have minted money and they expect you to spend it lavishly ( must have a Pajero). I do not think it is a good idea to go Nepal when you are on prime age unless you have special plan and it is hard to spent time doing nothing except gossiping.
Where were your children born in Nepal or USA? If they were born in US you know the pain of raising them. Your children will book you up for raising grand children and there are lot of benefits to your grand children as well yourselves.