... because I answered the question in my posts three times:

There's only one reason which is the MMP.

Let me try to explain to you why the question itself is either nonsense or hypocritical with an example you might understand:
When your child was small and asked you 'Dad, give me ten reasons why waters freezes' you will answer her there are not ten reasons but only reason being that temperature is falling below 0° Celsius/32 Fahrenheit.
If your child would urge you to give more reasons you probably would tell her that looking for more reasons doesn't make sense.

It's that simple with senseless questions, isn't it?