I like how easy it makes programming simulations in python, as well as just about everything else around my computer/code for that matter! It's very helpful to have many people contribute their own features or improvements of existing ones because there are so MANY things you can do with this program!! There aren't really any downsides at all when using simpy; however we would love if they could improve some aspects concerning running multiple projects simultaneously - but overall i haven’t had much problems yet either way (but am always looking!). This software allows us students from various disciplines such science communication research etc., who might not be familiarized wth each other coding wise / language knowledgewise & also helps me organize our thoughts by making them more organized through code which will help others too once implemented into school curriculum programs.