Why not? Because the upside it has is largely overrated for most projects but it brings tons of complexity. The kind of costs you only should be willing to pay if your app is so complex/large that is is a problem.
Real microservices don’t share a database. Figure how you do joins, how you ensure all services have the same definition of a ‘user’, how you version interfaces, etc etc.
Ohhh…and stay away from NoSQL. As cool as they make it sound; it super fun for prototyping but once apps grow it soon becomes a burden only to become valuable again once you have enormous amounts of data (but then your schema is probably less fluid so that’s okey)
