How are you even supposed to know if that stuff belonged to someone seriously ill or someone who passed away? Huh?
second hand market is nothing new. It exists in every country because there are always people looking to sell thing they no longer need and other looking to buy them for less.
that said, I agree with your last point. just because someone buys secondhand does not mean they're poor or can't afford new things . people have different reasons for buying used.
Yes you are right, there is no way to know about the things, whether the owner was suffering any serious ill or not. That's why i believed that it is better to avoid such things especially that is related with food items. There are lot of methods to clear the second hand items from germ, before using them it is good to used boiling it or can used proper sterilize method. But we can used furniture , books, frames, decor item or much more that are not directly affect our body. The value of this market is incredible, it is a great way to save money or fulfill your needs. Saving money is important but at the same time prevention is also important. We should give priority to our health first.