i think another good reason to use glass is that trichs stick to plastic easier

as an example , look at what sticks to the inside of a baggie or if you remember from when you used to buy it..
( ahh, the good ole days, waiting for ages for some dodgy weed

)
also after you've used a jar a couple of times , you can do an iso wash or scrape it to get what might be left. whereas with plastic ,not so easy.