Growing up my family would often use plastic bags to store leftovers in. I am glad that for the most part we have moved away from this, however, sometimes I still have to remind my parents not to use them unless it's a last resort. I understand that they are convenient, and it makes clean up easier since you don't have dishes to wash once the food is finished but it creates so much waste that it's worth having a few extra dishes to clean instead.
Normally if my family orders takeout that comes in plastic containers, we will save these and use them for food storage so that we can get at least a few more uses out of them before recycling them. They are also really great for sending gusts home with leftover because you don't have to worry about getting your containers back.
Obviously reducing plastic waste is best and having sturdy, long lasting glass/ceramic food containers is better, but we all inevitable end up with some drawer or cabinet filled with misc takeout containers so it's good to get as much use out of them as we can!