For us we have always traveled to LOS as a couple or as a family...mainly as a family...we love it for all the reasons everybody else mentions...except we just don't take girls home...LOL
Also it is a great place to base yourself if you wish to travel to other destinations in Asia as opposed to trying to do this from Oz which is 8 hours flight to anywhere even close in Asia (unless you live in Darwin)...that's our future plan when we move to LOS for a year or two...we can enjoy LOS with all its benefits and have some great little visa runs!! A veritable holiday away from a holiday
Another reason for "Why Thailand?" specifically Phuket for us, is that there is good International schooling for our son...what a great opportunity for him for a year or two!!