This diverse view is very good. It's always promising to pay attention outside of your generation and use-case. Family and friends are a great starter, but try different neighborhoods , cities, or even countries - there are a LOT more opportunities out there.

Sadly, one thing I've found with people's suggestions (and I've heard a lot of "next hot app" suggestions as I'm sure you have as well) already exist. They just don't know that they do. Maybe there's a job for bringing those apps to those people? How meta.