Nothing comes free. Everything has its downside or at least some challenges that you need to deal with. If we go for microservices, it has its own challenges. So, let's look at them and discuss how they can be minimized if there is trade-off.
Challenges of micro-services
Infrastructure maintenance
Although you don't have to update your infrastructure every day, it still needs to be maintained and it needs more effort. Technology freedom comes with microservices, but not without any cost. You have to maintain different server instances using different technologies. This will need better infrastructure and people with experience of more technologies.
Actually, you don't always need better infrastructure and people...