"Does is get easier?"
I'd say, for me, that question doesn't really sit well. There are just too many variables in my own experience and as a whole, not one single story or perspective is the same.
The knee-jerk reaction? No, it doesn't get any easier, not really. But the reflective answer (with regard to some things) is that time does heal to a degree.
As a birthmother, that hole in my heart is there but not as debilitating as it once was. So in essence, day to day life has certainly become easier. But I honestly feel that's largely due to the openness I have with his family and knowing beyond doubt that he's healthy and happy.
Growing up as an adopted child I didn't struggle with a lot of the issues that some of my other adopted friends dealt with, though I know my parents had extra concerns with regard to my health or behavior. ADHD and other behavior problems seem prevelant with adoptees, and that can be a life-long struggle for everyone. I always felt loved and even when I finally met my birth-mother I didn't feel abandoned or any struggles of the heart with regard to her giving me up.
Adoption is such a personal and profound issue that I don't beleive it can be neatly boxed into a yes or no answer. What has gotten easier for me may be even more devestating for someone else in the same situation. I think it's such a simple question, that doesn't get asked often- and I most certainly think it's one of the most important we can ask (and answer) ourselves.