Update rx-must-die.md

panels/rx-must-die.md

@@ -19,3 +19,67 @@ Kevin McDonagh, Novoda
 * Hasan Hosgel, Lab1886 - Mercedes-Benz
 * Ash Davis, ImmobilienScout24
 
+## Why did you choose to use Rx? 
+Change of mindset from doing things in the background to defining behaviors. 
+
+Solution to threading problems, and handling streams of data. 
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+It was good in good old Java times. 
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+Because it fits nicely with all streams and can be used for all different aspects in the app. 
+
+### Why not
+Coroutines are there to solve threading problems 
+
+
+Rx is overused . No need to apply to everything . 
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+Do not adapt the latest things, stick to the architecture your team likes 
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+Difficult to get rid of 
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+When not used daily then dangerous to introduce errors and misunderstanding . 
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+If you use only Singleton you probably don't need Rx
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+It might be less readable .  Operators concatenation might be too much. 
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+Stacktrace is not readable . 
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+5000 extra methods 
+
+## not to use for
+Calls to the backend
+Business logic that should be in a function
+
+
+
+#### use for
+React on change of favorites
+Push from the business logic 
+Rotation change 
+
+###alternative tools
+Live Data with room
+Arrow library?  Different league 
+Coroutines 
+Rx bindings
+Rx kotlin
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+Think about reactive scenarios. 
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+Do not force an architecture by your library 
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+Rxjava 2 was made to include backpressure
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+###what is missing ? 
+More education on real use 
+Split rxjava 
+Preserve stacktraces 
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+