Memory leak detection? (pros and cons)

Created by: E3V3A

Q: What are the pros and cons of including a memory leak detection library?

Background: Some developers have suggested we should add the leakcanary memory leak detection library to our debug builds. This sound great, but do we really need it? How will it affect our builds? To what extent will its inclusion make our code even more complex and thus even less maintainable?

Here's a blog about it.