It's dangerous to choose anything someone else might choose. My favourite technique for good passwords is to think of a memorable phrase (preferably with numbers) and take the initial letter of each word.
"I can sleep at Nandos, providing I pay $100 for that"
Yes, the non-latin alphabet in particular probably helps a great deal, if you use a substantial portion of it. The Hindi words probably less so, since they are just as likely to end up in dictionaries of common password fragments.
Bet that would be harder to crack and still easier to remember for a multi-lingual person.
In fact if non-latin alphabet is widely supported for entering password, it would make them a bit more secure I feel.