I was a Scout myself and volunteered as an ASM with my own home troop and with another troop after college. I was well liked as an ASM, helped the Scouts plan some ambitious outings and went on high adventure. I recently moved to a new state and want to continue working in this program, which has helped me build my leadership skills and given me a positive thing to put my energy toward.
I contacted the council in my new home and met with the membership growth director, and he didn't say so directly but I could tell he suspected it was a little weird that I wanted to volunteer with scouts when I don't have my own child in the program. He said "we don't usually have people reaching out to us, so this was a unique situation" (When I was in Scouts we had several very talented and respected adult leaders without kids). He also said that all the units basically have plenty of ASMs already and nobody needs one.
I reached out to individual units over email but no response. Also, some of these emails bounced and some of these units have websites which are non-operational or have very out-of-date material on them.
So right now I am registered as a district-level merit badge counselor but I don't really know anyone and don't have anyone asking me to teach a merit badge. I might be in a council where additional leaders are not needed or wanted. Should I just find something else to focus on?