Some good points raised there all for consideration.
For me, i don't think i could spend the rest of my life wondering "what if".
I now know it was the right decision.
Been here 3 yrs now.
Go for it, the itchy feet will never leave you...what is the worst thing that can happen? You lose a few quid and have to come home,but, you will have had an amazing experience and tried something extraordinary. You can always make moe money, but you can never get back the time you have lost. What is life for if not for trying to cram in as much as possible in the short time we are here?