Go for it Louise! I spent years going by myself to a friend's apartment in Spain, or paid the single supplement for other holidays. I went on my first JY hol to Andalucia last Sept and it was fantastic, a great group who were good fun and really friendly. The whole hol was suberbly organised and everything about it was brilliant (despite a public service strike in Spain and an eight hour diversion to Madrid to get home!). Age differences don't matter (I'm 40 and my friends range from 20s-60s!). I've booked to go to America's Golden West in March and South Africa in Sept (blowing my savings!) and I can't wait. Don't put it off, you never know what's around the next corner, so just pick a hol you'd really like to do and I'm positive you will never look back!