Well, when I was 15, I thought that 30 is old. 35 years later, I still don't feel old, although some others might see me as such :)

Age was never a barrier for me. I have friends decades older or younger and I never considered it as something to be taken into account. The truth is though, that I don't meet often people under 30 that we can connect any more. Again this is not a rule, more like an observation. But I guess it's the same people that I wouldn't connect even if I was 25 either!