As an adoptee in a similar situation (I have no info on my birth family), I understand where you are coming from. I, too, would have to go to court in the state in which my adoption was finalized with no guarantee that my file would be opened. The state does offer a search option, with adoptive partent permission (my father is still living and fully supports any search efforts), but still no guarantee of finding anything.
I, too, don't know if I have the physcial or emotional energy to search. I have a very full and happy life. Yet, I long to see someone who looks like me and shares my blood. My mother (passed away 13 years ago) always wanted to find my birth family to thank them for giving her such a wonderful gift. I am lucky in that my parents were always very open and positive about my adoption and expressed loving sentiments about my birth family.
All that being said, I still don't know abut searching even with my famliy's full support. If you would like to discuss off line, please send me a message. Maybe we can help each other come to some kind of resolution on our search decisions.
I do hope you and I both find a place of peace regarding our birth families.
PS- My adoption experience made it very easy for me to opt for an open adoption when we adopted my daughter. I am so thankful that my daughter will not have to go through what I am going through.