It is very relative and I knew that saying it. If you are more than twice my age I am likely to call you "super-old," but it really is subjective. Sometimes people get offended when I use that term. I am very young!
I am not quite 25 and experiencing all the trite "quarter-life crises" that arise around that time, such as: "Should I buy a house? Is this the career I want? What should I do with my life?" but thankfully, I have also been engineering a lot of long-term plans. I believe insomniasexx and I are almost the same age. Edit: It will be my half-birthday sometime between April 30th and May 1st. So I am not really even not quite 25.
Should I buy a house? You can even ask that question? Wow. I'm impressed. I say definitely yes, then rent it out. You probably saw my various comments on the quarter-life crisis w/ commentary by apes and newgreen. If not, it's here, originally posted just after you signed up on the hub. by the way, "What should I do with my life?" is a great question. I'd love you to #askhubski.