While I get your point, it is beyond unrealistic to expect every vender at a train show, or every random modeler at a club or open house to be the “Scout leader, grandfather, mentor” of today’s youth.
Not everybody “loves” children general, or wishes to interact on that level with them.
I love my grandchildren, but to be honest, after raising three kids and three step kids, I’m pretty full up on the kid thing. I’m not the school teacher type, or the Scout leader type - like the elder Dr. Jones said in the movie - “you left just when you started to be interesting”.
I’m in this hobby because I like to sit quitely and build models, not becuase I like large crouds of people - young or old. Oh, I forgot, this hobby is no longer about building models - we just buy them RTR and drop them on KATO track.
Now if a 15 year old wants to sit next to me and learn how to build a Silver Streak wood kit, I might be up for that. I was rather experianced at them by that age.
Sheldon