this i cannot brain from you.... 

if you dont have card then that means consider you have already like give up on claiming the point... of course it is not polite the cashier nvr ask for your permission to swipe....
just like you finish up your can drink and throw away the can... then an auntie come and collect all the cans being thrown and sold them...
if the auntie earn RM 3000 from that per month... you jelly ah? you also want stop the auntie from collecting your can from the bin?

I feel some people here quite ignorant at times.

It's like when we see a beggar, we will say do charity, pity them, what you don't need give them, etc.

But when they manage to accumulate and net in a lot of money in a day, that will make it to the news and then a lot of people will butthurt.