Hi Judy
Welcome home - it's great to see you here again.
I think it's great that young people are coming forth in your church with an interest in the organ. I also think it's equally as great that you also keep your interest going in the organ ... it shouldn't matter what age we organists get to, as long as we can keep hitting all the right (and wrong) notes, we can share this responsibility with our younger counterparts.
I would like to think that with all the time you have invested in practicing that you would not just put it aside just because a couple younger kids have shown an interest. They still have a little ways to proceed, experience wise, before they could be considered "ready" to take over at your level.
Never say die, Judy ... I'm 12 years older than you and I'm not about to throw in the towel ... being an organist is in my heart and soul ... I just can't give that up and keep my sanity - You shouldn't give up either ... the way you have talked about Bach and the pieces that you've played from memory - that's a gift Judy ... a gift you have and should keep cultivating.
These young kids need guidance from the experienced ones ... The experience that I've learned over the past 48 years as an organist can not be learned from any textbook. It has to be learned while playing and working at a position - I am still learning and trying new things especially in modulation and improvisation and still have fun with it.