I use both - Snapchat for the filters and Insta for the views (no shame).
In August 2016, Instagram launched Stories to their then 150 million daily active users and yes, you could have been forgiven for asking, “Um...Isn’t this a clone of Snapchat Stories?” Regardless, users didn’t hold this against Instagram, and we can see this in the numbers: Snapchat’s growth has since slowed by 82% with daily posts down by 40%, while in the same period Instagram has hit 250 million daily active users and boosted daily average app usage from 24 to 32 minutes. It would be naïve to think that everyone has jumped ship from Snapchat to Instagram; in fact, there is only a 56% reach overlap between the two platforms. Despite being the same product, Stories on both platforms have their own unique, learned human behaviors that have developed over time. So why do we have one or the other?