I've been here 5 years. Apart from the initial wrenching homesickness, they've been the happiest years of my life. I've got my British citizenship now, we've saved up a little bit of nest egg. We have no debt. We don't own our home and most likely never will be able to, but I can't let that worry me if we're doing the best we can.
When I think of moving back to the US, it makes me feel slightly excited, but also a little sad. I don't want to have to have two cars just so we can from point A to B, I don't want to have to pay huge chunks of my salary for insurance only to then have to fight tooth and nail to receive a benefit if I try to use it. I don't want 10 days' paid vacation and a 40+ hour work week. I don't want to live in, as someone earlier posted, 'the world's only true superpower.' Maybe I've been here long enough that American jingoism and earnestness is grating to me.
The great thing is we all have the choice.
I guess I'm saying we've got a cozy little nest here. It's not perfect, but we love our life, and we're staying put.