CORRECTED SENTENCES:

However, I agree with thoes people who believe that electrinic stuff tend to have negative perspective.  = However, I agree with those people who believe that electronic stuff tend to have negative effects 

These days, there is no person who has not have once own tellephone and computer even child and people always carry it in from in the morning until going to bed.  = These days, there is no person who does not have a cell phone or computer even children, and people always carry it from morning (getting up) until night (going to bed). 

therefore some people seem addicted to this. = Therefore some people seem addicted to this. 

Even when people meet their friend or family, they concentrate on their phone so they cut off the conversation.  = Even when people meet their friends or family, they concentrate on their phones so they cut off the conversation. 

Futhermore, there are many violent online games that young people would like to. = Futhermore, there are many violent online games that young people would like.

 It is likely to dangerous for children. =  It is likely to be dangerous for children.

They have not been mature yet but if they do this everyday, they adapt with violence so children couldn't distinguish which is right or wrong. = They are still immature and if they do this everyday, they will adapt to violence so children wouldn't be able to distinguish which is right or wrong. 

In this sense, It could bcome social probem in the furure. = In this sense, it could bcome social probem in the furure.

In conclusion, while there are many strengths about electronic systems, people need to free from technology.