I find with most people you have to be of a particular mind set to see the beauty of travelling. Not everyone has it. I don't have it as much as some, ie, I have life savings which i could use to travel the world, but will most likely use it for something like a deposit on a house.
The vast majority of people seem to like spending their money on crap, needless crap that they don't need. They want something to 'show' for their money, cars, clothes, TVs, etc etc. You have to find like minded friends who realise, although it is very cliche to say, that 'you can't take these things with you' when you die. That's why I value experience much more highly than 'things', material objects.
The hypocrisy of what I've just said between those two paragraphs is perhaps justified by me only spending money on things that are immediately needed from a day to day basis (food, transport), which includes the odd night out with friends (for social reasons), to enable me to afford to travel.
Make them realise that we are only on Earth for a short period of time, we are the only animals who can forsee our own death, therefore we must see what we can in this short time, and the short time in our short lives where we can actually see the beautiful sights (when we are young, and unattached).
If you can't find anyone, do it on your own! You will have an amazing time. That is the advice I got from some of the experienced travellers on here, and I will do it one day (in 2011, my big trip).
In Thailand, you will fall in love with the place. You'll be able to look back on your life and know that have done something meaningful, and not wasted your precious time.
[ Edit: Edited on 03-Nov-2009, at 05:07 by si403 ]