I don't have anything what isn't said to this thread. My experience is that telling people you are retrogamer and you collect hundreds of retrogames is like confessing you are an über-geek. Why collecting software for dead machines when you can do something valuable in your spare time like football and cooking?
People are frownsing at you and ask stupid questions like “Are you playing all these old games” and “Why do you play them? -they look so blocky”.
Like other people in this thread I think retrogaming is a relatively new and misunderstood hobby which will attract more people as the years go by.