Neither have I been to Thailand nor to India in my entire life but both countries are places I definitely want to travel in the (near) future. Culturally seen, both of them got pretty much to offer but I think I would prefer Thailand over India as my destination of preference because I just love the landscape, the beautiful coasts and the extraordinary food. Also, quite a few friends of mine have been to India for research & work matters and while they were fascinated by the Indian culture, they also told me to take good care because the crime rate supposedly is through the roof.
I'm disregarding this whole night-life, beautiful girls and lady boy thing. That's not really what I'm looking for when going on vacation. If I wanna bang a cheap whore or some slut I met at a club, I can do that at my current location aswell.