Happy and confused

Last Saturday(5/19), we just came back from Japan, and I called Mom to inform her we were just back. Mom told me that about one envelop was sent from USA and the receiver is Venter. I was so exciting even though I haven't gotten that envelop yet. I knew that should be DV-2008 notifiction. In fact, I was right about this. On last Sunday(5/20), I drove home to pick up that envelope. Yes, it is......it is DV-2008 notification. I can't believe that we finally got the result to be selected. I dream to have a green card to let me be back to America, and today my dream comes true....what so lucky me is and what lovely thing I have right now. Gosh....till now....it's still unbelive about the thing happened. However, there is one problem should come out. Once we pass the interview, it means we need to either fly back American by every 6 months or move to America for at least three years to meet the requirement of applying citizenship in USA. Flying back is quite easy but need to take a risk if immigration office concerns you are not willing to live in USA for long term and revoke your green card. This is not what I want actually, if possible I do wish I can keep my greencard when I would like to live America after retired.
But as Paul said, flying back every 6 months cost so much....how come we can afford that expense for many years?? Maybe we are going to be crazy for this stupid "greencard travel", does it sound right? I guess so. Sigh.....We do not think about what we should do next....but if we choose to move to America, how about my parents in law?? They are quite tranditional and are willing us to move back Tainan to be with them...if we are thinking to have a new life in America, I guess they will definitely say "No" and refuse every single word we will try to explan. See, things think not to be easy to do and make a choice next....I have no idea what we can do now...so, I am quite happy to have DV-2008 but also quite confused what my life will go next.
Anyway, I hope....I really hope.....everything goes easy to me....Thanks God and Buddha. I am really lucky if compare with others...Thanks Buddha bless me.