Edit: I meant to say, "There was a phase and I missed my one chance to be cool?!"

Phase? I grew up poor AF, so it was either jars or beat-up, cast-off Tupperware cups, and I always hated the feel of putting plastic to my mouth. Now that I'm grown (definitely not grown-up, though) and actually able to afford excellent glassware, jars are just a great way to reduce and reuse. I'm all about multiuse items, and jars are one of my favorites.

Lots of things come in straight-sided jars which maximize volume stored with volume consumed. The jar comes with a sealing lid. They tend to be durable since they have to survive shipping. I can make a big cocktail or some great food to give to a friend without worrying if my container comes back. Yeah, I'm Team Jar all the way.