<human>: Give me the gist of the text in a nutshell

I'm a 30 year old female who is single.  None of my close friends are interested in travelling (read: they have kids and/or mortgages), but I really want to go on a multi-country European trip in the next year or so.  I've done the backpacking solo thing before, but I feel for my first big Europe trip, I'd rather sign up for a tour (versus independent travel).

A few people have suggested something like Contiki.  I'm concerned that I'll be a bit too old compared to other travellers (I don't want to be "that old girl").  At the other end of the spectrum, I'm concerned that more expensive tours geared at older people will either be filled with married couples, or just a bit dull.  I'm young enough that I still like a good night out!
<bot>: Can anyone suggest a good tour company specializing in European tours that would be suitable for a fun-loving 30 year old single female?