BH -“I hope you are wrong about those kids’ attitudes towards their parents and not considering them to be a BURDEN! Is it not a zechus?!”
It might be a Zecus, but some Mitzvos are harder than others. Taking care of elderly parents in the city/town where they lived most of their lives is much easier than when they first come to live near/by their kids (eg. Lakewood) when they are older!