ahmadka

Everyone feels that it is needed, that is why it is cliche and should be avoided.   If you feel that this information is absolutely critical to your SOP, then include deeper in the SOP, such as in Paragraph 3.  
 
To be frank it really does not matter where or when your desire stemmed, only that you have that desire now.  No one gets brownie points for having the longest standing interests in Subject X. 

I'm assuming you're trying to say that some CS program are targeted towards industry while others are more research/academia oriented ..
 
If this is what you meant, how do I determine which CS Masters programs are from the first category ?