A lot of malaysians are actually cash rich. Cash coming from undisclosed source.

In most countries, credit card is widely accepted and is a safe method to spend money with minimal charge (not a lot of difference as compared to money changer), however people still prefer to bring cash is actually questionable.

The only reason i can think of is money laundering.

I beg to differ. Yes cash for backup. But CC payment is more reliable. Flaunting cash in foreign country is as dangerous as it gets.

But depends on destination also.

Very true.

Yesterday while at Mr DIY, their eWallet system crashed and unable to pay by any eWallet. Many just left the items and came back with cash.

Myself only pay cash so no biggie.

There u have it. CC or DC any time more reliable. As for eWallet? Hhmm, only time will tell.

I went to Europe with only cash 100 euro.
Comes back with 100 euro.