I wouldn't worry too much about grey hair. When I was younger, I always told people that they will know I have become annoyed with the grey when they see me show up with jet black hair. Now that I am older, I don't really care (or at least don't care yet). Honestly, I think that the mix of grey hair looks good on most people ("salt and pepper", as I once heard it called).

I am not too surprised to hear that your younger relatives are planning on being alone, forever. I have heard that this is actually a growing issue where people in their 20s, today, don't socialize, date, or even really go out.