There is too much violence on TV/ computer games?

In my opinión, playing videogames has become a popular activity for people of all ages. Many children and teenagers spend a huge amant of time, playing them.
Where as some games have educational content, most of these popular games emphasize negative themes and promote.
Killing people or animals, the use or abuse of drugs and alcohol...
Some children accept violence as a way to handle problems.
From my point of view, most of the videogames that people play are those about violence, but that violence should not affect them, because since we were children we have played games of this type, it depends on the person, if he/she is very sensitive then this person should not play this type og games ,he/she should play others instead.
My conclusión is that there is a lot of violence in videogames but it is the topic which people the most money with and this is what companies want, to créate very realistic videogames that are violent, because most videogames are for players over 18 years old.